I like the look of the elevation profile! I'd definitely consider riding either route as a brevet. I don't know that I'd ever do a 1000k as a perm, unless I was pre-riding my own route to check it before it was being run as an official event. How many controls would you have? I like them 80-100k apart on the bigger rides as long as there are plenty of optional places to stop in between, which seems like there is with all the 24/7 places marked, which is awesome. Nice to see hotel options at the halfway point too, some faster riders might be into doing a split like that and knocking the ride out in 50 hours. I do like the idea of a more "unsupported" 1000/1200k. I don't mind out-and-back routes, and if one were to have supported controls, it's a lot easier to do that kind of thing on an out-and-back. I think the only format that is better for volunteer staffing would be a cloverleaf style route.