What do you think of this green ramp/token deck?

I think your defense is rather weak. If you want to run a token based deck you need to swarm. Run elves or myrs or something. But if your heart is set on this deck then I would reccomend focusing on the cards you need. Get rid of your single copy of Leyline of Vitality (you won't get it in your opeining hand) and maybe add an Ascetiscism.