All good advice from Tom, do yourself a favour & take it!
But at 65 walking may be a chore so just go at your pace and all ways plan at least 3 steps ahead of what you are working on ao walking on I know as I am 81
In you situation I would plan at least 3 steps BEHIND of what you are working on.
The most important word here is plan.
From your post I'd assume you have limited building experience & no flying experience?
Is that the case? Let everyone know & we can come up with a plan.
- John.