So, I have a MyTouch 3g Slide with Tmobile and I wanted to get a data plan with it, but I don't want to pay 30 dollars for the plan. So, if I got the 200 mb data plan for 10 dollars would it be enough?By the way, I plan to only use the facebook app, youtube, and maybe download a couple of apps(and if i do download an app it will most likely be through wifi)