I redid my roof section a few years ago. Not a hard job except for the rot I found, below the windows and on the leading edge on the front of the cab over. I have a full wood shop that made everything easy. Our building code here now requires a product called blue skin around all new windows in new house construction, I used it around the windows and all leading edges to give a little more water proofing. Seems to have worked as no water gets. I am 6 hours away from the factory so I picked up the material myself, It was a lot cheaper than shipping even considering the high cost of fuel.
This is one of those project that will always be different from the last one so all I can say is get at it it will be fun and you will have a new understanding of your Alaskan. I still get complement on how well my 26 year old Alaskan looks. If I can be of help just let me know.