Don't know a Whole Bunch on the BA MC's

BUT the W9 I know a lil bit about.

Don't let the Bare Head cost of W9's fool you. They get pricey quick.
$1200-1400 for T&D Rockers (offset)
Custom Oil Valley Tray
Custom AN fittings for cooling lines
Custom AN Manifold for AN cooling lines
Offset lifters
Intake that is a bit pricey $450-650 (IIRC) or a Sheetmetal.

If your going to run them on a 59* block the inner bolt bosses will have to be milled away for push rod clearance. The outer ones can be left intact but look funny with NO bolts in them.if your using a 4-head bolt block.

Trying to run them with a 4.030 bore?? I'm not think that would be a good situation. I'm far from an expert BUT I'm thinking with 4.030" your looking at 2.05-2.08 max Intake valve before you run into clearance/shrouding issues.

Have you considered the Indy 360's?