You are not alone in getting excited about going single, it is an amazing car to drive when done well, I put myself in the group who has paid the price for getting ahead of myself and not doing enough research or using the right tuner from day one, this sometimes means you have to travel but that is small fry compared to a poor single set up or worse a car that does not work for you
You have to be 100% honest with yourself first, what do I really want to car to do for you, do not chase the pack, I have built several big single cars chasing the BHP dream and not thinking too much on how it will drive everyday, big mistake and huge costs
BPU is a great car on the Auto box, have you been in a single Auto at all, did you enjoy the drive, are you ready for the additional costs of running it once single etc etc
I think the single route is a great experience but one that can be very costly if not done right, there are plenty on here willing to share the experience on how to do it right