How much time did Sidious have to prepare for the Vong?
It has been implied that Sidious built the death star in preparation for the Vong, so when exactly did he find out about them? Could he have prepared any better for a war with them?
Instead of wasting time/effort in helping to construct the Separatist faction as the Republic's enemy, Palpatine could have made the Vong his patsies instead. Granted it would have stalled his plans for several years, but in that time he could have allowed the Jedi Order to continue(so he would have thousands of Jedi to use as his proverbial 'meat shields' against the Vong), and could have also been continuously cloning troops and bolstering his numbers even further... Perhaps even petition to have multiple Death Stars constructed as well.
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"I am tired of Earth. These people.
I am tired of being caught in the tangle of their lives."