My Team would consist of:
Illadelph: Always ruthless, this guy has a knack for coming up with strategies that literally obliterate the competition. He only plays to win, and in this situation being that the team needs to win he would be a perfect candidate. I would give him flight and being that I gave him Arch Angels wings he would also get those metal wings with poison darts (he was Arch Angel when he was with Apocalypse, and Angel with natural wings). He would be our areal view and sharpshooter protecting the rest of us.
Newjack: This guy plays football, and thus can act as a battering ram for the rest of us. With his favorite power of all super strength, he will be the brawler of the group. Even for all his pacifistic ways, I am sure he can ram right into these guys
Soljer: This guy is smart and ruthless. With invisibility as his power I am sure he could provide cover support for the ones that are in trouble since he himself will not be targeted. He could also take a gun and with both invisible become a sniper.
ExodusCloak: While none of us are going to be proficient in our powers being that we just got them, this guy is as close to a specialist as you can get on Telepaths. Why? He has a hard on for Emma (which is not a bad thing). With him on our side, and knowing what a telepath could potentially do he gives us mental support
Darthgoober: One of the most cunning people I know this guy will literally out think you for a win. I give him heat vision, because I know he will make the most of it for the win. While most guys might hit people directly on, he might do something like shoot at the ceiling, or the supports to give us a win against the guards.
I would give myself super speed. Being that we are in a group full of leaders and strategists I will take leadership position, but let the group mostly decide how they wanna break out.
(other guys I would readily consider would be Validus, Xmarks, Batdude, DC, Leo, Scoobs, or Mungi)
With the team set and full of great strategists we come up with a plan. Being that I am the narrator here I will give a quick plan of attack as an example of something we might come up with
This plan will be happening while all the prisoners are in their cells (since Doom will not let them out of them)
First Exodus Cloak will link us up telepathically. Darthgoober will quietly heat vision the door to open it. The telepath (EC) will cover for any noise by riling up the other prisoners. With that done, Mr Invisible (soljer) will go out by himself in the mess, while we close the doors again (even though it is still open). With Soljer out there, while EC will keep on riling the prisoners, he gets some keys from the guards. Since the guards will be busy with the other inmates this should not be a problem.
Immediately after, EC will make all the prisoners on one side of the prison go to sleep. As the guards are puzzled by this development but are still dealing with the other rowdy side, Soljer will quietly open all the doors to the other inmates (remember they are alseep.). With one half of the prisoners doors open (open as in the door CAN swing open, not open as in they are already swung open) he comes back to us. (EC will provide cover.)
With soljers job done. With my super speed I run and grab all the guns from all the guards that I can and if there is enough space do a whirlwind around them. Even if I cannot get to all of them a sufficient amount of guards will be unarmed, and EC will wake the freed side of prisoners. With them out and about providing cover for the rest of my team, they head out. Illadelph soars as high as he can, and takes out the guards that might still have guns (while I do my part and take out as many as I can with my super speed).
Newjack for his part will head out and literally ram as many guards as he can. Since EC is the resident telepath he will give the prisoners as much reason to kick the crap out of the guards as possible. Darthgoober will be aiming to heat up and melt all the guns (except the ones we might pick up).
If at any point during the mission Soljer gets heard it is agreed that I as the super speedster will get him out of the way, or take out the guards that spotted him. If all of them noticed we go out just the five of us and do mayhem. Darthgoober melting the floor under them and freeing the prisoners, EC giving us a mental link and making the prisoners blood thirsty, Newjak just breaking heads, Soljer being the invisible assassin, and me taking out as many guards as I can. Illadelph will play the supporting archer helping whoever needs it.
Once all the guards in the prison area get taken out the 6 of us make out way to Doom. Being that there are other guards leading up to him, me and Soljer will be the points. Soljer up ahead tells me where the guards are telepathically (EC linked up) and I super speed up and kick ass. We continue that procedure unless we are all needed (if the guards are in large numbers). In that case Soljer would fall back (as he has no offensive powers) and let Darthgoober take point. He omni blasts them, then me, newjak and Delph pick up whats left. All in all it should not prove TOO difficult to get to Doom.
I made this plan on the fly and could probably do better if I actually thought about it, but this should be good enough for now. It should also show an example as to what I meant by describing why you pick someone