Wider wheels, SAI, Included Angle, Scrub Radius oh my.

[91banditt2]

1991 Pontiac Firebird project car running 17x 9.5 wheels with 275/40/17's, from the factory came with am 8" wheel and 245/50/16's
I'm reading of horror stories of issues with straight line tracking at higher speeds with wider wheels because of increased SAI. I've read that you can "fudge" SAI a bit with camber bolts for the strut to spindle connection, but at the cost of negative camber, I've added caster/camber plates. I'm new to a lot of these steering geometry terms so I'm trying to wrap my mind around how they all work together and I'd like to hear your thoughts on some of the pit falls I should watch out for.