Any of this useful?! FREE in my hometown, on craigslist.
Beseler Enlarger
Enlarger timer with foot pedal
Easel
Negative carriers for large/medium formate and 35 mm
3 safelights
3 processing trays
2 developing tanks
Thermometer
Miscellaneous black and white chemistry
2 boxes of paper
I would be around there as fast as a rat going up a drainpipe. Great price.
The timer with the foot switch is one of the greatest darkroom accessories out there, if it works well, you'll love it.
It would seem the only thing you will need is a 150mm lens for your 4x5 negatives. You can enlarge 120 film with a 150, also 135 film, but with 135 film on a Beseler, it's a bit of a stretch.
The Beseler enlargers are not at the top of the tree, they are more at the middle of the road, from my experience. I've used quite a few of them, some with motorised heads.
If you don't already have at least one 4x5" film holder for your camera, that would be my priority.
Yep, the camera you have purchased is the 401, I have one of those. I've commented on it before in another thread of yours. I think you have made a good purchase, certainly a good price.
LJH has some very good suggestions, as have others.
With regard to using a pre-wash. I have worked in professional processing labs and seen quite a few different processing machines. These machines were state of the art for B&W film, Colour negative film and colour slide film. Plus I have observed the rise and fall of the mini-lab on the corner street. Not one of those machines, and I have seen a few, uses a pre-wash. I am not saying a pre-wash is or may not be helpful, but I don't believe it should or should not be a mandatory thing. Find whatever processing method works for you, then stick to it. Once you are up to speed, you can start fiddling.
If you are mildly interested in technique then you could consider these books, there are others but these would be my suggestions.
For processing film and paper, Way Beyond Monochrome Second Edition by Ralph W. Lambrecht and Chris Woodhouse. This is a hard cover and quite frankly the best book I have read on the subject. Another plus is that it is current to today. If you cannot find that, the original edition, soft cover, would be my second choice. As a reference I also have the three Ansell Adams books, they are not bad, but to be honest, Way Beyond Monochrome is just pure excellence.
For camera technique with a view camera. I borrowed Steve Simmons book from my library, it is quite good, as are one or two others I found. That is, until I read View Camera Technique by Leslie Stroebel 7th edition ISBN 0-240-80345-0 This is a hard cover book and about the best book on the subject I have seen and read.
Mick.