Looks good to me, but here's a few questions just to be sure:
- I don't know how powerfull the SE600 is but I suppose you've checked that it's enough for your TECs?
- I suppose you mean MAZE4-1?
- Maybe you should buy a slightly larger T-connection from mcmaster? (You probably won't see any temp difference from it though)
- I wouldn't 'waste' money on MCT-5, I'd just go with distilled and some Zerex or Pentosin.