Since most of your assembly will be done on the assembly table, it just makes sense to have your clamps nearby. If you’re short on wall space, try a rolling clamp cart! If you use your workbench for assembly, keep your clamps near the workbench. Check out these two helpful articles for clamp racks: A Simple Utilitarian Clamp Rack and A Parallel Clamp Rack.
Shop layout is all about making the best use of space. Place your machines so that you have adequate “safe space” that you need to work around them. The “buffer area” beyond that is the amount of room you need to run large stock though a given machine, keeping in mind that buffer areas can overlap between machines. If you want to get more organized, buy some 1/4-inch squared paper, make scale models of each machine including the safe space around each, and place them on your model shop layout. Remember that buffer areas need to be long enough to put an 8' sheet through a table saw, or a 6' plank through your planer, for instance. I raised my planer, so that I can use the area above my router table to pass long planks through the planer – all it takes is some modelling, and a little shuffling, and you will find the layout that works for you. Each space will have challenges; I had the area under the stairs that was wasted space, so I installed the dust collector there.
Basically, I created a linear outfeed area, which includes the miter-saw station with folding wings, tablesaw with folding outfeed table, and my large router table, all in a line along the 20-ft. wall and set at the same height. The miter-saw station converts easily for use with a mortiser—with workpiece support on both sides—and it also accepts a minilathe. I even planned a location for all of the tools, blades, and jigs used with the tablesaw: on the operator side, for easy access.