I think you'll be okay with the wood screws and some washers since the wood your CP is made from isn't MDF like probably most people's is. I thought about not goint through the trouble of using the T nuts and counter sinking them (I did route out my 3/4" MDF and BTW eyeballed it to make it center, just make sure you're standing directly over the hole if you do that, worked just fine), but since MDF doesn't have the same integrity as plywood with screws I did choose the T Nut route.
You might want to find a scrap piece of 3/4" wood, make your hole and mount a JS to see if you're happy with the way it looks and moves without routing out the bottom. I did that and I didn't like it and that's why I routed out the bottom.
Never hurts to do some test runs so when you're working on your real CP you don't

it up. Those CP's are a lot of work and it would suck to have to do it more than once.