Just got in myself
I've just entered into LF myself, and can speak only from my experience and the bit of research I did. I was on a budget, and though I would have really liked a Tachihara or the like, I couldn't afford them, and ended up going with a protable Busch Pressman for under 300 in perfect condition, with a "normal: 127mm lens, much like the Crown Graphic. I've found that it is actually easy to get down the loading, shooting, sequence, and my speed has increased, even hand held a few times so far. I'd recommend the Pressman, though I haven't used the Graphics, and they're about all the same. One thing I did do was get a lot of holders to avoid field loading if possible.
On the MF side, I got into all larger formats by getting a Yashica Mat 124g TLR and would recommend it on a budget and for entry, agreeing with all the former posts about MF being indrecible for large prints. and the 6x6 square plays with your perceptions of your work quite a lot.
Enjoy!