wow, what a level of conflict in just 22 posts
Power - 4w/g is c.280W for me, yes I can put that out according to the turbo, where peak is regularly >300W on interval sessions. Average for an hour to 90 min turbo is nearer 150-170 at average HR around 145.
My sole 200 so far was done in 7:20 riding time, 8h32 elapsed time. That was too fast. My legs were dying towards the end, as were neck, shoulders, wrists, but that was on a DF which I would not use for LEL.
Hills - you do know where I live! I'm sure I've found some at stamford in the past when I rode to Leicester.
This year so far I'm averaging about 70km/week, so 3500-4000 km for the year if I keep it up. In all practicality with the travel my job encompasses a single 200k per month would be the most I could achieve.
Very interesting and varied approaches though.