Awesome. I’m a bit young for the diesel engine to have kicked in yet, but when I get a bit older racing the Divide is on the to do list.
Fair play to you.
From an XC and road racing background, I can’t emphasize the importance of strength for a ride like that. For a long time I thought fitness was the be all end all, just get out and ride your bike la de da. I’m now beginning to realise that for any comfort or longevity in sport, you need to keep on top of your strength. Body weight exercises- squats, lunges, pressups, planks, bridges are as much as you need, just getting them done regularly is the important bit. To be honest, I just enjoy riding my bike, so I’m not that fussed on rolling round the floor getting sweaty, but after having to sit out for weeks and months with injuries, there’s a net gain in bike riding enjoyment if you do a little hard graft. Get a routine and stick to it and you’ll never have to worry about it again.
Best of luck