Really can't be bothered nit picking about minutes but:
My example was perth. Taxi time = 1 minute. No holding.
Obviously I do my run ups quicker than you, and instrument checks have never taken me 2 minutes. Five Mins total is reasonable, which is what Perth students used to take. Until the school clicked they could charge for 10 and did so.
My caveat of a quiet field still stands, and I didn't say it applied to a busy field.
Piper
Your list looks good. You won't really pick a bad one from that list. Things change but when I last did thorough research the ones on your list which really stood out were Bristol and Aeros. Still haven't heard a bad word about them.