Hi Paul
I put a thread on here a long time ago, about setting my father in law up.
He is now 70 & still going.
We set him up with a full van wfp system & gave him 50 -60 houses. He turned them into 200 within a couple years.
With health & age he has slowed up & reduced his work load, but, still got 120 -130 houses. He has help on the awkward ones or UPVC Gutter & Fascia cleans.
I have just got him Gardiner SLX Poles to make it easier, He had Swift & Grafter & before that Tucker & Brodex so you can see we are reducing the weight of poles.
He says it keeps him fit & out meeting people so I would say go for it
Gary