I've done a lot of this in the last couple of months not realy through choice, just through bottling it but its certainly made the whole xperience easier for me, I can fail 4 or 5 launches now before getting tired and I can wander around with the motor on my back for a good half hour before it gets uncomfortable which I couldn't do a few weeks back, this takes a lot of pressure off the whole thing as I'm not thinking about the weight or pain before attempting a launch.
Also, if I go to the field and there is nobody around then I won't fly on my own but I will usually strap in, power up and launch across the field just gently squeezing the throttle to keep the speed in the wing, really really good practice for getting used to 'feeling' where the wing is. I do the same if the conditions are ok for GH but not flight!
As far as the wing you use for ground handling,I only have my flying wing so thats all I can use but in training I had a horrible old poros wing that was a pig, BUT, once I'd learned to kite that one I then moved onto a new Apco Thrust and it was piss easy.
Personally I think too many newbies go straight for an intermediate wing without enough experience, I have no desire to fly a Revolution just yet as they seem way too fast on take off and landing for me, my wing feels safe and trusty even if it is much slower and for now thats all I care about, maybe I'll get another faster wing after a year.
Shame that you can't rent your first beginner wing until you've had a few flights on it and then take it back to a dealer and do a deal to take the rental cost off the price of a new upgrade, I'm sure a win supplier would be really popular with that option!