The only thing I would add to the excellent advice already given, if you decide to use Boveda packs for maintaining you RH, buy extras. Then when the ones being used need recharged you have charged ones to use. Another option is Heartfelt beads. They can be recharged much more quickly than Bovedas and backups are not needed.

PS- Take your time getting your humidor seasoned. Wetting the wood can and very likely will cause warping of the wood and then you have a major problem. It may take as long as a couple of weeks before it is ready to put your cigars in.