To be honest, and I believe Crunch and a few others have already told you this, generally in airsoft, starting out as a "sniper" is usually not a good idea. Its already been mentioned that fields would feel somewhat uneasy having a beginner sniper running around. If you do some research on airsoft, and get involved in the forum discussions, you'll get a better idea of exactly how much work/time/ and not to mention cash, it takes to make an effective sniper platform. I wish I had Tokyo's links, but im sure you can find them on the forums somewhere. In that post is all the information you need as a begginner player, including tips and advice on choosing your first AEG. If im not mistaken, I believe there is also a "Why you should not start as a sniper" link aswell. Trust me, it really helps.
I knew a man once who said "Death smiles at us all. All a man can do is smile back."