1) If you want a modern meter, I would recommend a simple incident meter like the Sekonic L-308S. I have one myself: they're cheap, reliable and easy to use (and they take AA batteries). If your budget is tight, any older model will do, really.
2) A 6x9 camera just begs for transparency film. Get yourself some of the current Fuji offerings, they're all excellent. My personal favorite is Velvia 100F. For black and white, the possibilities are limitless. I like Tri-X or HP5+ in Xtol.
3) Developing B&W film at home is much easier than you'd expect, and the results are so much better than minilab-processed film. Read around, there's a lot of good information on this forum with regards to developing your first rolls.
4) I've used the Canoscan 9000F in combination with a GW690. It's a very decent scanner with a true resolution of about 1600-2000ppi. Canon claims 9600ppi optical resolution, but that's nonsense. I scan my medium format negs and slides at 1600ppi, which is more than enough for most digital purposes. If you want to print really big, you may have to use a professional grade scanner (like a drumscanner or a Hasselblad) somewhere. APUG is not the place to discuss these things, so let me just conclude: yes, I'd recommend the 9000F.
5) The GW690 has strap lugs on the side of the camera, I don't know if the GSW690II is the same. Get yourself a good neoprene strap and you'll soon forget you have a camera hanging on your shoulder. As for bags, there is a plethora of choices. I use the (rather expensive but well worth it) F-stop Loka with a medium ICU.