I actually have a similar question....for me, it comes down to whether I should put all my eggs in 1 basket. Who knows if MP will turn into another SkyPiles.
On one hand, I want to make sure I don't miss the 9/30 deadline and even take advantage of the tax holiday.
On the other hand, I don't want to put all my eggs in 1 basket if MP going forward gets worse - it has worked OK for me so far.