Do you need someone to let everyplayer already have some quests done when create account?
Yes!
And, which TFS are you using?
1.3 otservbr
This hardly needs to be a paid job. But a good opportunity to learn some basic lua scripting.
On your firstitems.lua script for fresh characters first login, just add a bunch of lines for all the quests you want to set to complete.
Eg, Rashid Completed on new chars
player:setStorageValue(Storage.TravellingTrader.Mission01, 2)
player:setStorageValue(Storage.TravellingTrader.Mission02, 5)
player:setStorageValue(Storage.TravellingTrader.Mission03, 3)
player:setStorageValue(Storage.TravellingTrader.Mission04, 3)
player:setStorageValue(Storage.TravellingTrader.Mission05, 2)
player:setStorageValue(Storage.TravellingTrader.Mission06, 2)
player:setStorageValue(Storage.TravellingTrader.Mission07, 1)
Completed Djinns something like
player:setStorageValue(Storage.DjinnWar.MaridFaction.Mission03, 3)
You'd need to check there are variables set for all the quest trees like Storage.DjinnWar.MaridFaction.Mission03 or use the quest IDs instead.
Alternativly, you could just open up all your NPC files and remove the check to see if the quest is complete or not.