I can't comment on the clean bathrooms, I used the potty before I left the house. However, the range was very clean the day I was there and the rifle benches are all shaded. I took my wife to shoot my AR and after a long, friendly conversation with the attendant, he didn't charge for her range time since "she had fun". Setting up a chronograph is allowed.
They have a 25 year handgun/rimfire range separated from the 50 and 100 yard rifle range by a large berm. The 50 yard range uses a "clothesline" that you must hang your targets from; it can be a challenge to hit a moving target on windy days. The 100 yard range uses fixed targets and I believe you have to use their hangers/stands. For members only, they have long range shooting days where they move the 100 yard shooting line back to 200 yards (1 hour), then 300 (1 hour) etc. out to 500 yards. Again, this is members-only. If you want to shoot long distance and NOT be a member, it probably isn't the place for you. I haven't been there for a long-range day but it as I recall it is fairly flat so you won't have much terrain change and the targets are all at the same location (no way to shoot different targets). I think Tues-Thurs is members-only. I am considering joining; the rates were reasonable but I don't recall what they were. You can probably find that information on their website. It's probably worth the price of admission for you to give it a try on a "public" day. If you find the range that meets your criteria, let me know, too, as it sounds like the kind of place I would like to shoot.
Have you been to Riverbend up north? They have several different ranges all the way out to 600 yards scattered over 400+ acres. It is fairly pricey, however, and it too is members-only.