Next best move is to farm Archer skeleton card , slot it into ur elven bow and keep ur bow in storage for emergency use...
Always do HBQ and use R.Ballista always..
Next is to go and do quest for Dragon Set ( u will get lots of zeny/exp from the quest/hunting),Enchant ur d Vest with Agi+3 or aspd+3% or dex+3
farm porcellio card and stemWorm/dragon tail card and use it in ur dragon set
next farm Stings , odins,anolians,medusa etc .... then sell ur gloves and buy 2x celebs ( with ur voting points and zeny)
once u have all above items and aprox 150m zeny , start farming for ur SQI upgrades
get good guild and do sqi quests and make ur Arty ... ( use TTT cards in ur first arty)
Now u can solo most of MvPs, even which r rated as high difficulty,.. (link is here) ,
Search for forums , and u will get many cool topics which will help u with ur Sniper ...