Hei Amund!
Har du prøvd å spørre on dette på foto.no? (He he he...)
Back to "international lingo":
I feel right stupid for this, but I won't recommend that you buy mine - the Tech III 5x7". Sorry - but it's not what you're after.
First recommendation: Forget about rangefinder. That really limits you to newer Technikas with cammed lenses, which tend to be between "expensive" and "very expensive".
Older technikas can sometimes be had with focus scales; there's one on mine (which needs to be set at infinity before shooting, since it has an unoriginal back). These can sometimes be usable, but it takes some practice! Any fixed-zero camera (excluding only some monorails) can easily be fitted with distance scales if you need them.
Multicoated lenses are less important than many people (esp. beginners in LF) tend to think. Since LF lenses don't need to be zoom, or retrofocus, they can be made with fewer lens elements. That again means that there are fewer glass/air surfaces, which is where reflections and flare comes from. For an example of a result from an old single-coated lens, have a look at Dead Link Removed and the detail Dead Link Removed
For portraits on 4x5" you'll want a lens in the (180-) 210-300 (\360)mm range, and a camera that can handle it at close range. That means at least 40cm of bellows/extension, you don't want to work too close to the absolute limit of the equipment. Last week I saw a coated Heliar 210mm/f:4.5 go for 149 Euro on ebay.de - I was sorely empted to bid on it. There is no finer portrait lens for 4x5", coated or uncoated (well - maybe the new Cooke Optics one. But that's out side your budget, and mine too).
If you want more movements, monorails are best. But they are a b*st*rd in the field (with some exceptions here too, of course). For field cameras, I would think long and hard about Shen-Hao and Gandolfi. The Gandolfi Variant especially is a very strong, very stable and very flexible camera!