Enlarging a round table - DIY wooden table top?

I have a round 54" granite table, but with our growing family it's hard to fit everyone down for dinner.

I'd like to build a wooden tabletop to sit on top of the round table.. what's the best type of wood to use and how should I put it all together? I'm thinking taking four sheets of plywood, laminating two of 4x8 sheets of plywood together, then cutting an 8' diameter circle out of the two and hinging it in the middle with piano hinges for easier portability..

Would this work, or are there better ways of doing it? I have a jigsaw, router, vise (if needed), and a circular saw and am fairly proficient with them..

It'll be covered by a table cloth, so it doesn't have to be pretty...

Thanks.

Submitted January 31, 2015 at 12:57PM by stfurtfm http://ift.tt/15Sv7EC