I gotta backup the SDB idea. 500 RPM would be a cakewalk for it.

Additionally, you will want;

* - A brass case cleaner of some type. Whole 'nother can of worms to open there, but know that the majority of folks use a "dry" tumbler with corn cob and/or walnut hulls.
* - A vernier caliper to measure stuff with. You don't need a $200 one, but you also don't need a $9.99 one from harbor freight.
* - A powder scale. This need not be a high end scale, but it needs to be accurate and repeatable. You will use it to set your charge weights, occasionally check your charge weights, and to confirm the bullets you buy weigh what you expect them to. So it won't be a "very frequently" use tool, but important when you do need to use it.
* - Normally I would recommend here a reloading manual, and buying one is not a bad idea. But you have access to a buttload of load data by simply asking for it here on the forum . . or calling me on the phone.

Seems like that is about it for the 'really needs'. What am I overlooking, everyone?