The gentle advice offered is to save you difficulty later. MFDB are quite demanding, expensive and alluring. You can get most of their pleasure (but not all) from film - which also gives you the advantage of a bigger viewing area. I'm partial to 6x6, and Rollei TLR as a great way in, else Hassy V cameras are nice too. A good scan off a good neg can really blow you away.
There are ways to get into MFDB for the rough budget you have, but its like buying a house in construction: the final cost isn't quite what they told you: you want a driveway too? Oh....
The impact of MFDB on the whole work flow is not insignificant: HD start multiplying like gerbels. Computer processing.... printer quality. I hope you don't fall in love with piezography...
But, OK, lets say you are hooked (spoken by the fish already on the line): you can get into a used 22 mp back for about 5k, and a system for another 5k, so it can work. But you have to pick your approach very carefully - with lots of shopping. I'm partial to the Rollei world, but that is a very specific small little sector of folks, who chose it for a very set group of reasons. $10k gets you in, can get you going but ask a few questions:
1) do you need more than one lens?
2) handheld or tripod (and handheld here means handheld for now, tripod will follow).
3) is WLF important?
4) can you deal with manual focus
5) how demanding are you?
6) what kind of light do you like?
For example, if you pick a Hassy V, a 16 mp sq back, and a 50 or 80 mm lens... that's your budget. To get top quality from that (and you can), you'll probably have to be on a tripod for many shots, and good light for any others. The newer backs (maybe 1.5-2x the price) give you a couple more stops to play with, and some of the newer cameras give mirror dampening that gives another stop....
the packages (hassy, phase, pentax) give you the best bang for the buck, and maybe that will do the trick. Just be on guard: its a demanding and ultimately rewarding path. I often find a number of shots just don't come out, or work, but the ones that do are worth it. And not interested in shooting anything else anymore....
Hope this helps.