I agree with cde0214 your doing the right thing, no need to go backwards, if your that good already and you have a good instructor
A Super Sportster is just what the doctor ordered. I went from an Ace high glider to MEN trainer to Full house .25 to a Sportster .60 all in the space of one summer. I did all that because we had such a good club and I had an excellent instructor.

I and my buddies took a 12 year old kid who didnt own a plane he just hung out at the field and we started teaching him on what ever plane we had that was avialable, Robin hood 80 with a Brison 2.0, Extra 230 with a 108 a Sig Clipped wing Cub OS 120. He even flew at an IMAA ralley (on a buddy box of course).

So go for it. The only thing I would remind you about is Sportsters dont like to spin. At least ones that are a tad nose heavy.
If you do get stuck in a spin pull power off stop the spin add power fly out.

Good Luck

JDS