318 Chyrsler Stroker kits
You are using the same parts I am going to use later this summer to build a 390...the scat crank will do just fine in there.....the scat crank can be internally balanced with out adding any mallory metal also.
Cam wise I would use at leat a Comp XE275HL cam....
cylinder heads....the edelbrock close chamber is a good choice...but the best bang for the buck these days are a set of prepped RHS/Indy X heads....
Do a search for the RHS/Indy head on the forum you will find alot good info..also check out this link.
http://www.immengines.com/rhsheads.html