Keep the camshaft to a moderate size. It would be easy to over cam this one, and not being able to make it up in the upper revs, it will not see.
Id shoot for a cam that would make the good cylinder pressure.
Id look for a cam in the mid 250's to low 260 for dur@50 with as much lift as you can get.
Id use a 6K minimal converter, and 4.56' to 4.88's gears depending on tire height.
I switched over to a toilet setup mid year and that thing really made the power down low. I really like that alky injection system. Easy to tune etc.