Another UK racer, cool.
I've raced at Aldershot a couple of times (at national events). It's a good track. Website: www.aldershotmodelcarclub.net
It's a fast flowing track and a good one to practice your skills.
That speed controller isn't the best to be honest. Little better than the one you have fitted. If I was you, I'd get used to the equipment you have. After a couple of races you'll have a pretty good idea of what you need to upgrade.
If you're looking for a budget speed controller I'd point you here: Here.
It's a good speedo, has ABS breaks, reverse (most racers don't use this) and it's easy to setup. Not bad for £36 new.
I hope you enjoy your car. If you have any more questions just ask and I'll try to help as much as possible.