I shoot a lot of 9mm through P226's.
Presently, I have the standard thickness trigger, standard reset trigger, and E2 grip installed on my pistol. Previously, I had the shaved thickness trigger (factory thin trigger) and standard grips, and I feel that the reach and feel is pretty similar. If you can get a shaved trigger for less money than the E2 grip, give that a try. I like the way the E2 grip fits my hand, but wanted to keep the same or similar reach to the trigger, so I swapped the thin for the standard trigger.
I have shot SRT-equipped pistols before, and think that they are a worthy upgrade. However, you really need to get a lot of time behind a pistol before you will greatly benefit from the added speed that the short reset offers you. If you're not trying to tighten up your two shot splits or shave 1/10ths of a second off of a 6 round rhythm drill, then I wouldn't worry about it, honestly. Just keep shooting your pistol to continue to wear your trigger surfaces in and smooth the gun out.
Bradley