Okay here's some more advise.
I was where you are at about 6 years ago...the next step can be a bit scary, but the following should help. My apologies if this avise is too obvious...it wasn't for me at the time.
1) Make sure ABSOLUTELY sure the engine runs reliable at all throttle settings...you don't need the added scare of a flame out. Get comfortable with setting the engine up...I like to use a tack so that I'm sure I have richened the high speed 200/300 rpms. Also make sure the engine runs in different attitudes ... inverted and vertical.
2) Ensure all control throws are setup per the instructions...
3) Highly recommend expo if you have it...this will tame the highly responsive airplane.
4) Seal all control surfaces. Safer and better control
5) CG CG...make certain that your CG is set per the recommendation in the manual for first flights.
If by chance you don't have a manual the following link will give you the throws and CG #s.
http://www.kyosho.com/techsupport/technotes.html
6) During you first flight ... hopefully with someone more experienced ... perform a few high altitude stalls to get a feeling for how slow she will go. This will help on landings because you will have a better idea of how fast she'll need to fly.
good luck and keep us posted.
Mike