chiller is better.
such a big tank using a canister might be a prob. (im using the same canister for my 5ft planted tank and its already not strong enough to clear all the debris n leftovers)
still have to cycle.... buying salt n mix is easier if you have a bigger tank... if you have a 2 ft or so then buy the water also can.... you very strong to carry that many bags or jars
why dont you just surf the internet.......... and at the same time u can always ask us here. ..... by the way, i learn setting up my experimental tank on my own. Sometimes reading too much can be more troublesome n confusing