Firstly how are you with computers and do you have a laptop? If the answer is negative to both you could do with teaming up with someone who can help - maybe a member of this forum that knows TuneECU and living not too far away.
However you do it, loading a tune suitable for TORS and triple K&N's should be reasonably close to your needs. Ultimately a DYNO test would be the best option even if only to get AFR'a adjusted if necessary.
The PC5+AT is an alternative but you can get two dyno tunes for the same money, at least over here anyway.