Last part came in today, BUILD TONIGHT!!

Noveske GENII lower
Noveske/VLTOR MUR upper
Noveske 16" Recon barrel
KAC URX 3.1 rails
WMD nickel boron BCG
Raptor charging handle
Troy DOA BUIS
Magpul UBR stock
Magpul MIAD grip
BAD- CASS 45 selector switch
Geisselle SD-C trigger
KNS pivot and take down pin
JP Enterprise Silent Capture Buffer spring
Seekins bolt release
Seekins mag release button
Troy ambi mag release

Alot of friends dont understand my parts selection and I got the " a good old phosphate BCG is just as good", but I I wanted this to be a no expense spared dream build. I figure anything that doesnt work out can be replaced, so why not try new things.
So question to the brotherhood; what optic ?? Debating between Aimpoint T-1 and Eotech EXPS 3-0/2-0, or ........ ??
Any advice/ experience is appreciated !