I'd probably stick to G1s in Ireland and France.
Remember I only bet on terrestrial TV races worth £20k+ (usually only on Saturdays) as it is so it wouldn't be much to give up on. I've cut down a lot on the amount of form study I do as it is and I've certainly cut out almost entirely drawing up ratings tables for the races I do. I stopped subscribing to Raceform at the close of the Flat turf season and don't intend going back.
As retirement approaches, I don't find it hard to envisage doing what my father did at a slightly younger age than me. When he was about 50 he gave up punting entirely. Never even had a bet on the National after he made his decision.
I'd probably take up golf or bowls.
the main problem I see is that you are not able to follow and do the ratings as focusly as you would do when betting