The problem with SocialCircleMaxxing is the typically there a couple of fat chicks in the group, and it is expected that the lower-status males in the group couple up with them; don't think for a second that you will be able to get into a group and start hitting on the upper-tier women.
It is not worth being a part of social circles with overweight women in them.
If you look at the main circle of friends I've had since moving to my current city, the males in the circle don't have girlfriends/wives who are overweight. The girlfriends/wives do have some friends/acquaintances who are hefty. I consider those females to be at the fringes of the circle. This main circle that I have formed is useless in arranging dates and has always been, even 9-11 years ago in the heyday of the circle.
If you're confident, you can hit on the upper tier women. You may not get them but it's totally worth exploring if you can make something happen there. Also, in a lot of cases, you can leave a circle if you don't think you're going to get any benefits out of it.
Part of the reason I stuck with that main circle of friends I mentioned above is that two guys were big time recreational tennis players like I have been. So, even though the circle was not capable of arranging dates, I did get something important out of the circle via tennis.