Glad you are making improvements Robbie, should be alot more fun to drive with that stuff fixed. I bet it does drive like a new car with those improvements.
Hey I hope thats a typo about the 2.5 power valve? Rule of thumb is you want a pv with about halve your idle vacuum. My lumpy idle provides between 10-12 inches of vacuum and I run a 6.5 pv which seems to work ok. I'd try a 5.5 if I had one laying around. Get a Mighty Vac, you can use it to measure idle vacuum, bleed the brakes, check vacuum diaphrams, ect. And get a dial back timing light, even a cheapo from harbor freight seems to work fine, at least with a points ignition its as accurate as my sunpro.