1) don't get a bolt action rifle as your first gun, it's got the same range or less of most electric guns, and you don't have full auto. There's a long list of reason why you should get an AEG as your first gun, but just take our advice and get an AEG first
2) Check your local field rules for FPS limits. Note all FPS limits are measured with a .20g BB. Using heavier ammo to lower your FPS doesn't change how hard you're shooting.
3) If you're not planning on playing with other people, you can get any airsoft gun you like, but all the retailers I know of won't sell to minors. And it's ALWAYS a good idea to notify local law enforcement of where you'll be shooting airsoft, since it looks exactly like real steel from a distance.