That sounds like a lot of fun, I would be all about that if I could find a place locally. I shoot the CCI target and the CCI ar-tactical (I think this is the copper plated stuff you were talking about). I notice a much bigger difference between those two in my 10-22 rifle, I'm a touch more accurate with the target (1070fps) rather than the tactical (1200fps) but with a pistol I haven't noticed a major difference.
Volquartsen accurizing kit was well worth the $120 I spent on it. 2.5lb trigger pull, and it's a big difference from the stock trigger. Also has pretravel and overtravel adjustments if you're into that kind of thing.
Vortex is good for the 200 or so rounds I've put through the gun with it on. lower brightness setting gives a really good dot with not much prism-like look. I put it on with the outerimpact mount, took a bit of sighting in though. Was about 18" low at 25ft initially, but now that I have it sighted in it's dead nuts.