Well after several deep breathes I got it done using the table saw. I used a pull saw to finish cutting the top off and a box cutter to trim the edges. A quick run through the router and a light block sanding and I started to breathe again. A lot of work went into this 1st humidor to this point but thanks to good info from creekers it came out all right. The box was not as flat and square as my ego says it should be but a little extra tape on the corners kept things from rocking and chipping out. The next test of my nerves will be hinges, (barrel type) liner and trays.
Thanks for the info. Pics attached.