I have the Toytec adjustable struts/coilover setup in front with 5100s. I bought them with 600lb. springs in front, and Superflex coils in the rear (approx 210-220lbs. depending on who you ask).
I started out at 2.5" in the front, but I didn't like all the preload I had to dial in to get to that height, and the subsequent decreased comfort. At that time I knew almost nothing about suspension and how changing the weight of the spring (without changing it's height) can increase or decrease static ride height without adjusting preload. Anyway, I adjusted back down to 2" and the ride was better, but I was still unhappy with the constant G-outs, especially after adding 120lbs. of weight to the nose.
I purchased 650lb. springs and installed them, and immediately I gained some height back due to the strength of the springs without having to adjust the preload, a very happy medium, and now I have very little nose dive and most G-out situations are avoided. Unfortunately I did not measure the height gain after the install so I can only speculate as to how much height I gained, but I am guessing about .25"+/-
My point is, springs are relatively inexpensive to change out if for some reason you don't like the ride, or the height.
My opinion is if 3" seems like too much to you, it probably is. And no matter what OME says in it's product sheets, your ride height will vary depending on how much weight you have added to the vehicle. While a bone stock truck might get the full 3", a truck with a loaded rack, or bumpers will not.
MOST threads I've read seem to point to 2.5" being the "happy medium" of lift, ride comfort, and long term reliability of suspension components.
Good luck with your choice!
To answer the question, along with a stipulation, I don't think I would regret being at 3" as long as I had the proper setup to retain the comfort levels I desire. I'm about to completely change my setup, so I see how 3" feels and I'll dial it back from there depending on comfort levels.
