Hi Peter
I would respectfully point out that you are not (yet) in a dilemma because all the options have not been gone through and your needs haven't been considered.
You & I are similar in age; I am assuming it will have taken you 30 to 40 years to get to your current financial situation. Now you are projecting forward a further 10 years - this could change, either from choice or necessity - and then you expect to stop earning; and start enjoying?
You may get very specific advice from people reading your post - there isn't anywhere near enough information in it for anyone to give you detailed guidance.
As a financial adviser, working predominantly in pensions I would strongly recommend that you assess your situation with an experienced, qualified adviser who can discuss it fully & properly with you.
You may be able to get recommendations on finding an adviser from friends, family or neighbours, internet searches, and
www.findanadviser.org - run by the PFS/Cii which is one of the professional bodies for our business.
It's worth spending time in this area, and now is absolutely the right time to be doing so,
Best of luck,