The Epson 4990 performs very well for the price. For 120 and 4x5 for small to mid sized prints, you should be just fine. You can get ANR glass inserts, and better scanning holders to help boost the performance. If you want larger prints, you'll have to invest a good bit more, or have them drum scanned by a lab.
The tachihara wood field cameras are well made and relatively inexpensive. They work just fine. As with most wood fields, they are not particularly rigid, and have somewhat limited movements, and are a bit restrictive on how wide angle you can use. But they are lightweight, and easy to use. For landscapes, and general use, they are great cameras. If you are shooting alot of studio or architecture work, you'll eventually probably want to get a monorail or a technical field camera of some sort.