Small update. I finished the block off plates pictured above (painted black). I also decided to do the same thing with the vents along the windshield. I don't have heat or AC so there really isn't any defrost function anymore and the vents aren't needed. Ordered, received and installed Kirk Racing "race" roll bar. Removed the stock restraint system and reinstalled ~90% of the interior (still waiting on a few items). Work has been keeping me out of the car so progress has been slow. I did receive this though...
The most expensive single item I'v purchased so far (aside from the car itself): 55 mm IDA-style throttle bodies from EFI Hardware (purchased through Tweakit). Logan and I felt these were the best option out there.