Ok - it's opinions you want - then I will give you mine as well as ask a few questions. Remember that this is a public forum.

1) block guard PLUS sleeves??? On a N/A build - Please tell me why. You shooting for 15000rpms?
2) who built the head? 5 angle jobs done right do not come easy OR cheap.
3) did you get flow #s on the head?? Will you post (if not I do not mind, I will admit that I am sneakier than most as well).
4) why not send the block to Castillo as well to check and recheck the #s at time of assembly? Or does he just do cranks only?