It probably wont DQ, but im not for sure, since ur underage. but i would say stop now! especially since ur in the MEPS stage. Basic is goin to be a nightmare if u dont, cuz theres no smoking allowed. Basic is gonna suck, but going thru basic AND going thru withdraws of nicotine, wow, i cant even imagine how bad that would be. so just sum advice, stop now, then after basic, have at it, if u still want to