Just another two cents from me.
I also don't have room to break down full sheets of plywood like mentioned for cabinet bases. So here is what I do...
When I buy the plywood for cabinets, I ask the guys to rip them in half giving me 2x8 foot pieces. I have done this at Home Depot and the hardwood dealer I buy from. Never had any problems.
When I get home, I drag a piece on to the work table, slip a piece of foam sheathing under it, and cross cut the pieces with my cheap track saw. 34 1/2 for the bottoms, and what ever is needed for the uppers; some 30, some 39, or whatever is called for.
Then with all the sheets broke down, I set my saw at 23 1/4 and rip the base pieces to width. Reset the saw for 11 1/4 and rip the other pieces which result in two pieces for the upper cabinets.
That's not exactly production work, but I have been getting by. Heck, I get tired and take a break, so speed is not of the essence!