That was pretty much my approach until told by sombody that I couldn't. When I checked I found I was legal .... Safe was another thing
I gave up the flexwing as I couldn't find anyone in the area to train me. I self taught for a while but as the landings were too much like arrivals I thought I'd best quit whilst ahead. I have flown older three axis with no problem, but you have to admit, they do rather fall out of the sky when power is cut. That of course is no problem, and they can land on a postage stamp, but if you've only ever flown Cessnas, you might be in for a shock as you round out and chop the throttle
The lighter end of group A and SLMG's may very well be light, but they tend to have a heavier wing loading or better L/D and so do have more (for want of a better word) inertia, which is what I meant. The modern super hot microlights are different again, and I'm sure the difference is hardly an issue at all.