No,. Keep in mind, having the 1/0 in place just allows you to breath going forward. It affords you an upgrade path going forward. If you are considering improving the build incrementally then yes, definitely go the larger 1/0 OFC right off the bat.
The big three will help should you get a 2nd battery and have to run more equipment (it's not a bad idea at any rate). If your considering doing it all at once, then may want to buy your stock and connectors separately. these guys have pretty decent pricing on all colors/gauges of about any wire you can think of.