Whatever you decide, do your homework and shop around. It's a lot easier on the wallet to get into MF these days than it was even just a couple of years ago.
Take Dan's kit above:
The S/K 35mm in Alpa mount is a $2200 lens all day long based on the last few sales I've seen. Yes, people are still asking $3k+. They're in dream land, and unsurprisingly they are all still available.
Last TC I saw for sale on LuLa - $1300.
Leaf Aptus 22 - not the same model as Dan's, but still a really capable DB - about $2500 for a nice example on eBay.
So, total = $6k … for a really, really nice kit with lots of upgrade potential (the S/K is still - despite all the naysayers - a terrific lens on anything other than an 80MP back; in fact it's still a good lens on an 80MP back just so long as you don't try and shift it).
If you enjoy using MF on a technical camera - the slow, considered approach to shooting - nothing else comes close. Canikon could release a 100MP camera tomorrow and it wouldn't make a bit of difference; just like LF, it induces a different way of seeing - a zen thing if you like.
Ok, time to go sit under my pyramid.
Jim