Excellent choice of both trainer and engine. They are both top notch. As long as you use good, brand name fuel, you shouldn't have problems. I would start with 10% nitro as suggested, and fly with the suggested break in prop. Since props don't have a very long lifespan when you first start out, I would buy a few 11x5's and 11x6's to try out after you break your first prop.

I don't really agree with agexpert that you will want to scrap your engine for a bigger one "VERY soon after solo..and eventually move to gas". This engine will last you for years, and will fly this trainer perfectly. You will probably want to start looking for a second plane sometime after you solo, but you'll probably want to keep your trainer intact. As for moving to gas, I see very few guys who do this. A lot of guys are happy flying glow engine planes for their whole lives.

Good luck and enjoy!