Welcome to CHR! IMO you're being smart to detail your plan, asking questions before you commit $$$ to parts & pieces. Other than the spool one thing that jumped out at me is a Mustang II front end on an open T-bucket. Not that it won't work, but that IFS is going to be right out there in plain view for all to see and that will probably affect your selection. A more traditional look would be a transverse leaf & dropped axle with hairpins & panhard bar, but heck it's your baby and if IFS is what you want then more power to you. We'll be looking forward to seeing your progress once you have your plans finalized.