Here's some observations I have made over time:
1) Don't get hung up on ratings here, as there are strong players with lesser ratings, and some players with ratings that exceed their permanent pay grade (my current one, for example).
2) Number of games in progress is tough with short time controls, but much easier to manage with longer time controls. For instance, before I subscribed, I preferred games with shorter time controls, and they required multiple moves per week. I persisted with this short time-control madness when I subscribed until I realized that a longer time control mitigates quantity. I now have more games in progress, but I actually make fewer moves per week than I used to, simply because many of my clan challenges and tournaments have 7/7 or greater time controls (7/14 or 10/10, etc), and I need to make only one move a week if I am busy.
3) If you have longer time controls, it's OK to go to bed without having moved in all your games. I was funny about that at first, but I got over it. 70 games with a 7/7 time control only require 10 games per day to stay ahead for the week. Some of those games will be in the opening, which are relatively quick if you've decided where you want to go, and some will be endings where you have probably worked out most of what you want to do, so you can pace yourself. It's still a lot of work, but it counts as study time in my book!
4) Use our ability to manipulate the "my games" columns to structure your responses. For instance, I'll click on the "moves" column, and make responses to my games with less than 10 moves or so first. If we're at move 3 in the game, I already know what I want to play, unless the other guy plays a really outrageous move.
I then go to the games with the most moves. Very often they are endings where I have spent time working out what I think will happen, and it's just a matter of playing the moves. Philidor and Lucena rook endings (and others like them) are autopilot and don't require much time. Use the time you saved for the endings that really require work.
Or just read Greenpawn34's blog and win in the middlegame, and skip this step!
5) No matter how you slice it, increased quantity decreases quality. Quantity does have a quality all its own, but that won't change the fact that more games means more opportunities for "Oh $%^&, I missed that!" moments.
6) Make sure you're having fun. There's no money involved here, and the ratings mean nothing except whatever value YOU assign to them, so the only true measure is whether or not you value the playing experience here. If it's not fun, take a break. You'll be back!