Yes and better to do it within the first few months too. I just helped a buddy of mine install his lift. His truck was already 3yrs old and most of the nuts/bolts were pretty rusty, which made the install take longer.
I went through a number of phases with my lift because each time I had a bit more $$$ I would upgrade. If I had it to do all over again, AGAIN, I would bide my time and save up for a first rate system that I would not feel the need to upgrade.
As it stands now I have a suspension system where, literally, no two parts are of the same make. Seriously, not one matching manufacturer in the whole lot. (See my 'Garage'). This may not be the "best' setup, though it works quite nicely thanyou. And it sure wasn't the cheapest way either.
I would do it again. I installed a "lift" not for the "lift", but to eliminate excessive nose diving, acceleration squat, and body roll. The lift I installed took care of these stock suspension issues. The extra height just came along with the "fix".
Yes I would do it again. I have had only 1 lift on my fj (ICONS) and I don't think I'll change the lift. I did it right the first time according to me. Oh yeah if you do decide to lift look into aftermarket UCAs.