Just do the SYE. It's not that difficult (figure 3-6 hours) and you don't even need to remove it from the vehicle. Just work underneath.
I have a 99, auto and the 8.25 rear end, 4.5 RE lift.
Vibes were terrible (NOTE: 'vibrations' manifest themselves as noise in the cabin, not actual vibration).
SYE/CV combo was literally just like flipping a switch, instantly quiet.
FWIW, I couldn't tell that the 1" TC drop did a damned thing as I tried this for a few weeks before I got the parts to install the SYE. My advice? don't waste the time and just do it right.