Portable Internet service.

I am looking for a portable Internet service. Now the reason in asking this is because I cannot game online. My home Internet has a down of ~1.2mbs and a ping of ~1000ms. We can't find faster Internet where we live. But before we got the Internet I have now, we tested out Verizon wireless portable Internet thingy.it had a ping of 120 I believe and a down of 1.5ish. The reason we didn't keep that one was because we had a 5gb limit and we couldn't live with that. But I am wondering how much data does gaming online take? I'll be playing games like minecraft, cod, and command and conquer. Also do you duders know of cheap portable Internet that has a decent ping, a down of at least 1mbs and has enough data limit?