I have done this many times with a circular saw, a long straight edge and a quality saw blade.
The link below is a saw edge guide for a box store $30.00 far less than you paid for the ply sheet.
There are several othere guide options . I bought one many years ago and have used it for many circular saw cuts. also works great for a router edge guide in the 4 foot section.
The method.......
We lay down some wood stickers I use 2 x4 lumber on the floor drop on the ply sheet lay out you measurements and cut away.
The sheet will be fully supported by the stickers including the cut off strip.
You will have complete and safe access to the complete cut run.
You will not need an outfeed table for your table saw or lean over the saw and fight the weight and control of the sheet . The weight of the sheet is no longer a factor.
Be sure to carefull scribe the veneer to prevent tearout on both sides of the up cut saw blade.
We made a plexi glass template used to accurately lay out the exact cut line see attachment detail.
If you can cut the strips a 1/4 inch or more wider than you need and clean up on the table saw but with a quality blade on the circular you can get a quality edge.
Yes the resetting of the saw guide is a PITA but so is fighting a large piece on the table saw and going back to the box store to get another sheet to complete you project.
calabrese55