I wouldn't remove a working sump system in favor of a canister. You already have all your plumbing out of site, why hang hoses, inlets/outputs on your tank? No canister is going to give you anything in terms of filtration, relocation of the heater, extra water and ease of cleaning that you don't already have now.
Your money & time would be better directed at the substrate if you goal is a well planted tank.
Last edited by DogFish; 11-15-2011 at 04:12 PM.