Shop I wouldn't spend that much on a gym! . I've been a member at several gyms over the years and the ones I liked were small, friendly crowd, plenty of space for doing free weights, lots of treadmills, clean shower etc. The extras like an infinity pool, steam/sauna, fluffy towels etc are just not needed. If you are going to really enjoy all that stuff then you are looking at a visit being 2-3 hours (assuming an hour for exercise) and even before having DD I would struggle to find that time more than once a week.
Do you have to sign up for a 12 month contract or can you do a taster couple of months and see if you will actually use it?