A sniper I assume? I've got all my perks planned out and written down up to level 40 myself. I try to focus on Perks that actually unlock something that can't be done any other way in the game. Perks that do anything about radiation, healing, health, sneaking, more caps, EXP, etc. can all be done without wasting a perk (RadX, Stimpak, Shadow armor, play more, etc.). So I try to only pick perks that actually unlock something I wouldn't get any other way, like Locksmith (never the 4th rank), Hacking (never the 4th rank), Gun Nut, Armorer, Local Leader, Science, etc. I may add the increase damage or increase a SPECIAL if nothing else is available to unlock.