Fuel tank venting opinions

[WSSix]

My new Tanks Inc tank came with a roll over valve/vent that's to be remotely mounted above the fuel tank level. I currently have the charcoal canister from my 96 Formula behind the rear end connected to the vent line with the old tank. Should I continue to use the charcoal canister or switch to the valve/vent supplied by Tanks? The valve/vent doesn't have a filter on it. The charcoal canister is mounted mainly on its side versus vertical. Suggestions?