If I were you I'd build some sort of tripod-like support system from the front of the block to a little platform for the turbo to sit on so that the weight of it doesn't wear out the manifold faster. If you wanted to get fancy you could get a small precision spring from mcmaster too and rig it up so its adjustable in the amount of support it provides. However you do not want to brace the manifold to itself in any way, or make a support that allows for no movement of the expanding stainless and binds it all up by holding the turbo too rigidly.

Also, instead of going with some insulation over the top rad hose i'd go with something like this (along with the insulation):

http://store.summitracing.com/partdetail.asp?autofilter=1&part=SUM%2D390124&N=700+115&autoview=sku

The main hose part is all stainless, not rubber with braids. Be-Cool also makes something like it.

How close did that compressor end up to the starter? (1 inch, 2 inches, etc.) And how many inches is the first straight section coming out of the port on the 1st and 4th runners?

Nice job overall - although i'd have to agree with the comment above, not a big fan of the cheater cuts on the 2nd and 3rd runners. But it'll work.