Look at you Brian, getting after it!
I don't know anything but I agree with Greg, first thing should be at least a jig to hold the car and front end where it needs to be. No sense creating more work for yourself redoing parts because something moved.
Do a search and reach out to a couple folks here on the site.
Preston, pretty wicked mustang built in a carport with I think a home designed suspension.
Bryce, equally bad ass lil Falcon. Built in a home garage, engineering back ground and best of all, proven.
I posted up a cad image of Mike Maiers new front end, he's always available to talk to and is a suspension geek. I know you've heard this before but Ron Sutton seems to know what he's talking about, his site has a lot of great images to get ideas from and for a small fee he'd be your best bet.
I got to ask, what was done before that you didn't like? How far did you take the stock design before the sawzall came out?
Good luck and keep posting.
Dan