I.m a cheesehead myself. Been so since Bart Starr and Vince Lombardi
I'd find a good machine shop, or talk to the racers up there and they'll tell you the best. There is a Book, "The Step by Step Guide to Engine Blueprinting". Good info for building one. When you talk to machinists like they to know if you know, what you're talking about and want done. Such as decking the block or squaring it. Using main cap studs or bolts for align honing. Even new heads have to be gone over and checked, CCed, surfaced, spring heights checked, etc, balancing and having everything to do it with. Even if you bought a crate engine, I'd tear it apart and check everything.
I live an hour from Summit in Nevada, and the machinist I used here, he's about 1 year older then me so we're both "old school". But I would use a C-4. You get the right build up, and you won't be sorry. You never miss a shift, unlike 4 in a row. I used both by the way. The biggest problem with 4 spds is the clutch setup. Autos is getting the right convertor. Stick, all the info needed to get the right convertor takes a little work.Not hard, just info required.
Must II is a good platform. Just a little heavy due to all the luxury stuff in it. Hatch back is heavy back there but weight in the rear is a good thing.