With all this talk of "round town" driving, "not drag racing" and keeping it a daily driver I still wonder why you would go single and not just turn up the BPU boost to 1.25 BAR and be done with it, it will still make 410+ ish BHP and be no expense at all, keeping full drivability
I loved my BPU auto, fantastic car which would run quick 1/4 mile times, as fast as a small single 6 speed !
You are in danger of spending a Fortune if not careful and then not being fully happy, I would get a test drive in a BL Auto with Hi stall if you can to test the drivability
My comments are only ever intended to help BTW, I have just gone through the single build several times and made MANY mistakes along the way, you have to be 100% sure what you want the car to do for YOU and get the tuner and mapper to deliver this, you should not take too much spec advice from a crowd, it clouds the decisions you make