Yes, overall I think this is the right approach. Finish phase 1, with a very minimalist Arboretum Rd entrance, and hopefully begin phase 2 right away. I agree with you that phase 3 isn't all that necessary. Really, I'd sequence that as the last part, rather than middle. But I do think phases 4 and 5 are pretty crucial. You and I might be fine with riding along the main circumferential Peters Hill path, but the slope is too much for a lot of riders. It's definitely not an 8-80, all fitness levels type of path. Even though the true transformation is in phases 1 and 2, I really hope the full build can eventually happen (before I'm too old to climb Peters Hill).