"Raising the Fu Power limit: 1 point
The maximum amount if fu powers you can have is 20. For each point spent on raising this limit, the maximum increases by ten. Note that this only applies to powers actually bought in the system- the bonus powers a Natural gets do not count towards this limit."
All these things are covered in the opening post.
Don't forget you are a Natural as well, though!
Meanwhile, Cloud, adjusted for being a Natural, your focus part of your loadout looks like this:
Fu powers x36 (+12 Natural bonus, total 48)= 18
Fu power maximum increase x2: 2
Focus x11 (+4 Natural bonus): 7 points
Remember, for every three fu powers a Natural buys, he gets a bonus one for no cost, so you only have to buy 36 powers to get 48 in total, and you only have to raise your max limit for the ones you bought. Two points in raising the limit makes the maximum bought powers for you 40, of which right now you have paid for 36 of.
Ok, in that case, Castor, 15 points will idneed buy you thirty powers. Remember to pay 1 extra to raise your maximum powers to 30, and remember as a Natural, 30 powers bought gives you 10 extra powers.
As for Body, increasing a Primary stat costs 5, but if that takes it past 8 (for a Natural) it costs extra sol check out the first page of the thread for those costs.