I think you will want the developer closer to the enlarger (unless you are such a speed demon that you are on to another print before the first is out of the developer).
Get a smaller set of trays for normal prints. flowing water is good for a stop bath, but a print washer is overkill. If you are using a normal fixer, use a normal acidic stop bath. If you are using an alkalai stop bath like tf[3,4,5] then water is the choice.
I've built a stand for stacking the big trays in my darkroom too. Not many people have room for 4 monster trays (dev, stop, fix, wash)