My only concern is that I won't have players to play against. If you think the free
plays will be sufficient, then fine. I pray your right. If your not, well lets not go there

Don't worry over it too much, if it bombs terribly we'll try again. It's not like the game will cease to exist.
People don't have to pay to play it, unless they are dedicated like you, so we can always get fresh meat to try it out, and some people will stick. Specifically if it's awesome and full-featured, which it's on the way to being (full-featured that is, it's already awesome.)

And yes, I think FreePlays will be sufficient, in terms of monetization, but I think it really will succeed more so from the continued development and support of the 'game' with things like Observer Mode, Dedicated Servers, etc.
...
Plus, we'll have you to organize and observe matches while running FRAPS so we can have cool YouTube videos to show off to the world... right?