Go for the free Calumet CC400, Martin. It'll do whatever you want a view camera to do and it's quite portable. I cut the rail on mine down to 16" to make it more manageable. There's a coated 150mm f/6.3 Fujinon lens often seen on E-bay, usually less than $100. It's a darn good lens and if you keep looking sometimes you can find them for $50 or less. Older 4x5 film holders often go for $5 or so each for the wooden ones; I have quite a few of them and they work fine. I've also found newer (but still old) plastic holders for that price, plus shipping. Three will get you started; half a dozen is better. A focusing magnifier can be any old magnifying lens to start with; if you have a 35mm negative loupe it will work. A focusing cloth is anything which keeps the light out: you can make your own or an old dark t-shirt or sweatshirt works fine (stretch the neck opening over the camera back, stick your head through the bottom.)
These days, large format (at least, in the 4x5 size,) is probably one of the least expensive forms of photography to get started in. Good luck!