La California
Nice! There are at least two very good dealers in the US, Digital Transitions and Capture Integration. I use DT in New York and they were very helpful. They both have a LOT of experience with a wide range of medium format digital setups and can point you in the right direction.
In contrast, worldwide Medium Format Dealer quality and experiences vary wildly from good to nightmarish. You can tell by most of the comments of the Euro guys in this forum regarding medium format digital. Some love to hate PhaseOne. I guess a few have been burned by some of the international dealers.
In the USA it is way different. Those two companies are legit and have VERY good relations with PhaseOne/Leaf, Arca, Cambo, Rodenstock and Schneider among others.
Your budget, while on the low side for MFD it is enough for a good setup. Even with a back like the very affordable P25+ and say a Mamiya / Phase DF or Hassy H you get the look of medium format due to the large sensor and optics and of course the awesome tethering performance of the Phase system for very little money.
A few years ago I assisted Greg Kadel when he came to Puerto Rico to shoot the EXPRESS (clothing company) campaign. He used a H body with a p65+ back tethered for a few days. The setup along with the Capture One software was flawless. He used mixed lighting outdoors. Mixed tungsten fresnels with natural daylight and some profoto flash. Stunning images. Yes, new gear is out but it does not mean the old gear suddenly degrades its quality! Still works as good as ever!