Yes I have done the exact thing and had it for about 2 years now. Finally I am upgrading to the 5.5" kit but I am going to use the same 4.5" (RE1642) leaf pack.
It won't be a perfect set up but is ideal if you plan to go bigger in the future.
Problems:
- 1462 leaf pack alone gave me 6.5" lift initially and settled down to 5.5" in a month, down to 5" after about a year. I had to add a 3/4" spacer to the front coils to level out the ride.
- A bigger leaf pack needs a longer shackle to flex properly. With just the stock shackle, it will not compress like it should. It results in an unbalance with the front - the front does most of the flex and the rear follows the slopes of the terrain.
I haven't installed the 5.5" kit yet so all the pics on my site are with the 4.5" leaf pack and stock shackle
www.ericsxj.com