I installed the Rampage top on my EB a couple months ago, and the install ended up being pretty straightforward. And this is coming from someone with zero experience tooling on autos of any sort.
The one tip is to make sure you have the rear bow tensioner relaxed when putting on the windows and the top. The tensioner is referenced in the manual as the Bow Release Bracket and is labeled B3. With the tensioner relaxed, you have a bit more slack which makes zipping on the windows and getting the top secured to the Door Frame Top Bar a lot easier. Once you have the top and windows in place, lock the tensioner in place by pressing it against the rear bow.
In my opinion, Rampage's K-lock system for attaching the windows to the body aluminum is a PITA! It does require a bit of finessing.
Feel free to PM me before/during the install if you have any questions. Good luck!