You're correct about using a canister filter. I'll be using my 2217, we'll see how that goes. I don't foresee a problem having discussed this extensively with a few individuals however the concern with using a canister filter is oxygenating the water. I'm hoping the 2217 is strong enough to supply ample current. If that doesn't work I can always move the Loc-Lines around to help agitate the water.
I can also use a wye and split the flow coming into the tank with the Loc-Lines like Tom Barr has done on a number of occasions or I can just use a Vortech to help with the circulation.