Another thing to consider when making this choice.
The glow plane can be flown on windy days.
The electronics and engine can be used in future planes.
Everything with the glow plane can be sold if you ever decide you want out.
The Super Cub is grounded when it gets windy
If you crash it bad enough that you can't repair it the whole thing goes right in the garbage because you can't re-use the radio equipment.
There is no resale value at all.
With all that said, with no help learning you are very likely to crash either one. The Super Cub is easier to repair and damage is usually less.
IF you can get with an instructor buy the glow trainer hands down.
There are other choices.
I would rather see you get used to flying 4 channel, it will help you advance much smoother.
Maybe something like a Begin Air:
http://www.hobbytron.com/Begin-Air-4...-Aircraft.html