I have a full size table saw but I still use a helper and/or feed rollers when working with large pieces. Rollers are $20 each at Lowes or HD. I have 2 and could use 1 more.
I clamp a fence to the material and use a skilsaw for everything. My cuts are every bit as good as I get on my table saw and it's a lot easier to manage. Just built two boxes this week with my 6 1/2" 18 volt cordless saw...
Make sure whatever you use for a fence is straight and keep the saw tight to the fence.