Kelin is right, but experiencing game on your own is smthing what should not be skipped. Get a sniper build if you like it,it will be reliable even in later game when you will play with team.
also i prefer this sniper rifle build since its not totaly paper one:
(http://i42.tinypic.com/ifwx7t.jpg)
DRUGS: Jet,buff,nuka,cigs.
NOTE1: Wearing tesla armor might save you in many fights.(this build is capable to carry even tesla armor and full gear)
NOTE2: Boneyard guard perk is necesary to take at lvl 1, you need eat mentats to get it. But if you get addicted you need recreate character and try again.
PS:
If you decide to argue about low SG level also name arguments WHY it should be higher!