I wasn't thinking right. Yea that was what I asked for adding them up, but now I realize it was a dumb question.
So here's a couple ideas.
That outlet for sump pump should be enough for some fans. Maybe air pumps IDK I'm a soil guy.
On that wall if you had an outlet with 4 plugs to each window area to a 20A circuit then 1 window will be for the first room and other window for next room's exhaust. That is 1920W for exhaust fans and room fans for both rooms.
These fans would work for each double 400W hood. So what I'm saying is Hood---->Hood---->exhaust fan---->window out. Then 2 of these for your garden foot print. Then you could add a hood to each to the beginning, later as you expand.
http://www.htgsupply.com/Product-GrowBright-6in-High-Velocity-Inline-Fan.asp#
But there are several others to choose from, this one is 110W, but even the biggest one is 230W so that circuit is plenty.
So I would run a line from a 20A on the top to the first window --->double outlet for 4 sockets------>second window----->double outlet for 4 sockets. Then you can use the first set of outlets later.
Next.
I would run a 15A line with an outlet or two on that wall to the mother area, where I would have a double outlet for 4 sockets.
So with a 15A breaker is 1440W / 12A is a lot for Mums & cloning etc. You can run a bunch of t-5's and fans with that.
So I better post this before it gets fucked up. I have a sandwich to eat.
Daniels