2" lift question

I have an -06 TRD, V6 that I put General Springs on the rear shortly after I got it, 6 years ago. Rears were totally flat when I got the truck. I've just put OMEs on the back(my original KYBs couldn't handle that much lift), and am waiting a bit to put Bilsgtein 5100s on the front.
Currently, the truck sits at a nose down angle. The rear is about 38 1/4" at the rear axle, the front is about 34 3/4" at the front axle. Measurements from ground to bottom of fender flair. That's about a 3 1/2" difference.
Truck has stock front springs. But the Bilsteins can go up to about 2 1/2", which would come close to leveling the truck.
My question is two fold. Will it be okay to do this with the Bilsteins without changing to a taller front spring?
And.......
I've read of issues with the bearing/bushings on the front axles at the transfer case having issues when lifted. I really don't want to have to mess with those. So, is there a height limit I can go before I may run into issues with the bearing/bushing? In other words, would it be better for me to go with the Bilstein's #3 position, which gives about 1 3/4" lift, to avoid hassles with the axle bushihng?

 

No problem setting them at 2.5 with stock springs, mine are at 1.75 with 1/4 spacers and no problem. It is recommended to get a taller spring in order to not preload the spring which results in a harsher ride but i like how mine rides. The bearing you’re talking about is the needle bearing, only way to know if you’ll have problems with it is to lift your truck and if you hear a roar or feel a vibration down by the transfer case it’s the needle bearing. I had the roar and vibration and replaced the bearing with the ECGS bushing and no more problems.

 

In my experience, lifting anything over stock height will increase the chances of you having to replace the needle bearing. The higher you go, the more chance you'll have this issue (assuming you're 4wd). With that said I had mine set to 1" for years, with no issue, and then installed the 1/4" spacer, and developed the issue after. Like many others that have lifted, I had the needle bearing replaced with the ECGS bushing. I currently have mine set to 1.75" (2" effectively), and the ride is noticeably firmer than stock. I think going to 2.5" would be too much for me. If you run LT tires, the effect will be felt that much more.