How much good will an adjustable fuel pressure regulator and a good tune do for me? And who makes a good AFPR? I was looking at the Holley and BBK ones. Holley is $54, and BBK is closer to $100.
For the FPR I wouldn't go with anything other than kirban. Their reputation is second to none. At this point, I don't think a dyno tune (as in tuning the eec) will do much if any good. You could find out what timing setting the car likes on the dyno, but that's about the extent of your tuning abilities without getting into the EEC. Before you put it on the dyno I'd install the Pro-M just to make sure its calibration is on. Also, it wouldn't be a bad idea to take the stocker along with you just in case there was a problem with the pro-m. Pro-m make a good meter, but sometimes things are a little "off" and you can chase your tail to nail it down.
As for the FPR tuning on the dyno... I will tell you this. Some say that it is a good item to tune with, others say that in the end the eec will, for the most part, cut the pulsewidth back and negate the added FP. When I had a VERY similar combo to yours I had my car dyno'd on a mustang chassis dyno. By bumping the FP it showed an almost 20RWHP gain, yet at the track later that week I saw NO improvement. I did find out that if I lowered my FP a pound or two before I drove to the track, and then bumped it back up in the staging lanes, I would pick up ~1mph, and that MPH would fall off on the rest of runs that day, even after plenty of cool down time. This tells me the EEC wins, but everyone seems to have their own ideas on the subject. Hope that helps.
EEC will set you back to near stock setting, not to mention your set up doesn't need any more fuel, even at near 300 at the wheels my best performance is at 39pounds (stock setting). Keep saving for the h/c/i combo or blue bottle if you want to spend your cash well.