Personally, I wouldn't get too hung up on custom profiles, as the canned profiles especially Canson, Canon and Epson tend to be spot on. I create custom profiles with the xrite eye1 profile software (publish), but still find I can't best most of the canned profiles. I also find the profiles created by Breathing Color for canvas and matte paper to excellent.
Pick up a copy of the Shewe's "The Digital Print", great place to start. Consider printing from LR instead of Photoshop.
Not sure about "real photographers" and LED lamps. I have never done that, probably never will. I display glazed, non-glare when it's the right look, and Tru Vue CC glass. All glazing that is not (non-glare) will pick up room lights, however the fluorescent lights are the worst most times as they are big and square.
You might also consider canvas, largest size @ 17", on your printer, so you could easily get 16 x 20's and mount to gator and place in a nice frame. Very nice look and lend to triptych's very well.
Paul