Sounds pretty normal, Dee - both the limitations at this point (six months or so) and the raised expectations.
My ROM was about where yours is, I could also touch the ground, but the side stuff was less advanced. I didn't really feel like I was back to a reasonable ROM until 9-12 months along. I haven't gotten to where I was before the OA in a lot of ways yet (no splits yet), but I feel that at two years I'm a lot closer. I think on the ROM, just let that happen when it does, but keep the light stretching up.
On the muscular thing, I did have twinges at six months. I couldn't bring my knee fully to my chest at the time, so just did what I could. To me, it sounds like some of your muscles are there, some are lagging and some need some TLC and tough love at the same time. You'll get there.
One thing that was awesome after the second was that there was no surgery in the future. Whatever gains I made were permanent. I found that my first hip actually got much stronger in the recovery for the second. I guess PT, exercises, etc. benefit not just the second, but the first becomes fully fit (IMO, of course).