Freddy....my sugestions. You need as much space as possible.
1/ Dont want to sound cruel, but clean the place up. A dirty/junky garage is just a waste of space. Everything should have its place.
2/ If it is a double garage, keep it as such. You may nrrd that 2nd bay, since your project takes the other. Put the benches at the end so you have as much width as possible.
3/ I see you have a big compressor. If you can build a shed out back to put it in, you will save space. Better yet, if you can build a small addition for all your tools, that would save working space.