@Littlenose – Grew up there many moons ago. One good option used to loop west before going south: up and through Steep, left onto a byway up stoner hill (or longer but easier just keep on the tarmac and turn left at the top), along ridgetop lane, dwon the hill to stroud, then theres a byway or a lane depending on fancy towards ramsdean and from Ramsdean up can gp along byway/bridleway up the back of ramsdean down and onto Butser hill and into QECP.
If you are after pubs to stop off at make sure you get yourself to the Harrow in steep when it warms up enough to sit in the garden. Can be linked into a ride around the hangers easily.
We also used to head through durford wood and rogate common when going eastward, not all bridleways but back in the day wasnt an issue.