A soft top is a good idea. Depending on your height/weight you may be able to go shorter... like 8 ft or 7ft. I'm 6'3" 170 lbs or 190.5cm 77.1 kg for you metric system people and I started on an 8ft board.
Any brand would do they are all similar. Catch surf/ Odysea or the Mick Fanning ones. As long as you have fins, lots of foam to floar you and a leash you'll be fine. They do make special wax for foam boards which does work a little better than wax for a normal PU or Poly board but any wax will work.
Commented on post was deleted
23 Dec 00:20
Went back today for a quick 45 min session before work and very disappointed in myself. Tried picking up right where this session left off and getting more height.
Instead was dropping my hands, rolling down windows, looking down, doing all the wrong things.... realize I definitely need to start more slowly and do beginner turns to get warmed up and help keep my arms quiet. Then slowly build up height from there as my body gets used to remembering what it should do.
I really want to work on using my cardboard slide out of the turn too so that maybe I can carry enough speed across the flats to make it back up the incline on the opposite side. I can cardboard slide on cardboard at home but at the bottom of my turns its ugly and not functional.