No, it won't be too much. You can throttle it back with the disconnects. A eheim 2211 or 2213 will work.
On the other issue, I would order an Aquatop long before I ordered a Mr. Aqua.
Also, do you have a link to the tank you'd suggest? I'm looking on truaqua and I don't see a tank w/ a similar footprint.
Thanks for the speedy response! I was thinking about ordering the 2211 for the tank but, since I already have the 2213, it'll save me some money.