Newb...

You dont want fiberglass, the hovering you mention is 3D and no you're not going to do it with a high wing, and you wont do it period untill WELL AFTER you learn the basics...

Most trainers move at 60mph easy....

Super chipmunk, no

Im just going to say it...

Judging by what you have said so far you are clueless about RC flight, and I can almost guarantee you that you dont have the skills or natural ability to fly a low winged plane...you dont have the (im not being insulting here) common -flight- sense to handle a jump right to low wing...and you will crash it...an instructor isnt going to be able to save a low wing near as well, and you're going to lose it.

Stop trying to worry about what you want to do a year or 2, or even 6 months from now, focus on what you need to do, and that is learn the basics, the other stuff will follow, you can probably turn around and resell the trainer you buy for a hundred bux, or pull out the motor and electrics and put it in a low wing arf, your looking at about 150 dollar upgrade for something like a 4-star.

I can guarantee you that anything that is custom built wasnt built for a begginer, nobody targets a custom build at that flying level because it isnt cost effective to get that kind of performance out of a custom plane...

Like I said, do what you want, but this is one of the few times that I will say that judging from the amount of knowledge you have, combined with how ambitious you are trying to be, that if you buy that low wing, you will be out full cost, not just the cost of an easy upgrade later on...