Speaking from experience, if you use the Fluval canister, you will need to clean it religiously! Don't ditch it. You can use it to run carbon every now and then to clean the tank with. Also, as far as the Maxijets, I have mine on each side of the tankpointing towards the LR
. I have the 1200's, so there is plenty of flow. You can rotate them in which ever direction you want. Just try to eliminate the dead spots.
Yes, and be careful with the playsand.