I understand, a person must work if they have work.
I was thinking of doing something very similar but with a smaller Arduino like the Pro, of course it would not be as robust as your system just enough to have some good battles with like-setup tanks using the lower cost HL IR stuff. Since I do not have anyone else around me that battles with 1/16th tanks I set the standard with my 4 HL tanks.
Good luck,
Tom