I think Bristol is closing so it may be an idea to visit once you have your licence
Filton is closing pretty soon. Which Bristol were you planning for? Both accept GA traffic.
I did Bournemouth - Sandown - Compton Abbas - Bournemouth with a waypoint at Axminster to make up the miles.
I thought it had to be 150NM direct from each airfield. Otherwise, whats to stop you just touring the whole of somerset and dorset then landing at Exeter and Dunkeswell? or for that matter just flying round in circles for an hour and a half at 100kts? still covered 150NM.