From the learning point of view, I think you'd have enormous fun (is that the right word, Whirly ?) getting time in the schedule of the only guy in the UK who does Scout instruction, especially as it's for a PPL and for free !
I'd concur with the other advice - get on an R22, build time, read the accident reports, then go for a Scout or even an exmil Gazelle.
And IIRC running costs are of the order of £160 wet, but your investment can't be used for anything other than pleasure and there are requirements for passengers to be "crew" - which in th past has been a loosely construed term. An R22 will earn money at the right place if it's used for SFH/instruction and so on.