Before you leap in I'll add some more.
I didn't go for either of the Graflex cameras as they don't offer full movement, no front swing and no real forward tilt. You have to use the drop bed in conjunction with the back tilt and front rise. The front tilt is there to compensate for the drop bed when using wide angle lenses. Some of the later MPP cameras are better in this respect offering decent and complete movements.
I went straight for a Linhof Technica IV it offers enough movement for most shots you will ever want to take and is portable but heavy. I did have a Sinar F2 but it isn't a very practical field camera, the folding ones are better. But make sure that the camera is compatible with modern dark slides as not all the earlier models are standardised making it difficult to find replacements.
Look at the widest lens that's practical with these cameras though as the focal length is it's distance from the lens board. With the Linhof a 90mm is about the widest practical lens I can use with useful movements, (the Linhof has an adjustable back). Any shorter and the lens is too close to the film and the bellows too compressed to allow movements, it becomes a real pain even to reach the nobs.
The bellows will often need replacement but beware of the
EBay sourced ones as they tend to be thicker and less durable. It's often worth replacing them with ones from a reputable supplier, many of the more popular field cameras will have direct replacements rather than a custom one.
Loading and unloading dark slides is no real problem with a light tight bag and a spare empty film box.
As for lenses I tend to favour more modern ones over the original, if you look at the LF forums you will find some fairly good recommendations for reasonably priced ones. I wouldn't worry too much about the absolute best (I don't) as it will be near impossible for you to realise their full resolution as a beginner and you won't notice. I use a fairly basic Calumet 150mm, an older Super Angulon 90mm, and a G-Claron 240 and they're pretty good. I've also got a Tessar from 1910 and had no real issue with the shutter calibration, I've always got a close enough exposure from it if I fire it a couple of times before making the actual exposure and avoid the fastest speeds.
P.S. Focussing, or evaluating, really requires a cloth, I just use a black fleece blanket. Actual focussing requires a 6x loupe and I recommend the proper focussing loupes rather than the slide viewing ones. And the really older cameras won't take kindly the more modern and heavy lenses.