Personally I started at 30, don't see much reason for ramping. I luckily have some pretty strong hair genetics (grandfather on my Mom's side had thick-ass until the day he died at 82), so epi hasn't affected my hair at all.
Your dosing looks fine. Don't be worried about adjusting to fit your reaction to it. For instance, when I bumped up to 40mg I was initially doing 8am, 1pm, 6pm, and then 11pm, but turns out I couldn't get to sleep if I took a dose that close to bed. Now I usually do 8am, 12:30pm, 4:30pm, and then 9:30 (good 2 hours before bed for me). Do what fits for you.