Congrats, glad you enjoyed it!
In terms of headsets, you may as well wait a while, unless your school requires you to have your own. The money is better spent on actual flying and bits and bobs you need for navigation etc... Also, the club's headsets are (generally) going to be better than anything you will pick up now in a hurry.
If you are stuck on getting one though, might be worth putting an ad up at the school instead of trawling the net all day.
Enjoy the next few lessons!
Regards,
MS
