Dave,
I removed mine about 5 years ago but I remember that the adhesive remover was almost worthless when taking off 20 year old glue, it was rock hard. I used the remover, a 1" metal scraper and a wire brush to get mine off and it was still a royal pain. I don't know how your 71 is set up but the rear door glass WS on my 81 is held on by 3 rivets as well as glue. If it's anything like mine you'll have to take off the inner panels and drill them out, be very careful doing this so you don't break the fiberglass. To put them back on have someone press the WS pieces against the fiberglass while you put new rivets in....this is much easier with help. (use glue also)
There are 2 colors of adhesive that GM used, black and yellow. Not sure what is correct for a 71 but they are both messy to work with and that stuff sticks to everything. Use what you want really.
T-tops are fairly easy to do, mine had a bunch of plastic plugs to hold them in. A little glue around the area and push in the plugs.
The door strips are a pain also, get some help as I had to stretch mine a little. Have some good tape handy to hold them in place once the glue is on.
The front pillars can also be somewhat of a pain, mine had screws holding the metal chrome strip to the pillar....if that makes any sense.
Before you glue anything it's a good idea to test fit them to see what you are going to have to do to get them on. Leaving them lay in the hot sun for a couple hours also helps, makes them more pliable.