Those AMT and Correct Sound pedals/pres seem nice. But I have no experience with them. I do see them get flipped quite often though on eBay/CL/Reverb.
The old Distortion+ should be pretty sweet sounding in that setup. Newer RATs are okay and I've had good luck with them in front of my Concert Leads but those newer RATs tend to be dry sounding.
Maybe you should try a tube amp or passive pickups, something that will let you hear your playing more so you know what to really work on with you technique. If that's an issue for you, which it seems to be otherwise you wouldn't have mentioned it, I think.
About the speakers, try a 2x12 or 4x12. Preferably a Marshall or something similar. Not a couple of PA speakers like you're using, that's a recipe for sterile or harsh and boring guitar tone.