my new 90 gallon tank!!!

so yesterday I got my much anticipated 90 gallon aquarium! :clap:
it came with 6 goldfish that range in size from about 6 in. to about 10 in. (tha'ts including their tails), 2 (common???) plecostomus, and 1 weather loach(they are hard to catch with hands).
it also came with a marineland magnum 350 diatom canister filter. I have never had a canister filter before. does anybody have any experience with this brand and is the filter big enough?
when I got the filter it was(and is) leaking(I got a $30 discount because of it), but I've located the leak and will fix that.
in the future I am going to be making it a fast fish tank, with bala sharks and rainbowfish.

so.... is this filter big enough?
(bump)

yes, I realize the tempurature differance. which is why yesterday I put in a heater and got rid of the goldfish. I also added another pleco and a bala shark and 2 cherry barbs. I'll be adding lots more later!
so this filter is almost enough, but stretching it? I'll probably just put a power filter on the tank or something.