Well honestly you could wait to the new expansion to start raiding, even then there's Extreme trials you could do to try and test your skills in till then, also it'll take you a little while to get to the equipment level needed to do the current end game raiding, also to let you know, it took me about a year to finally get how to play summoner, you can fill the time till the new expansion trying new jobs and getting to really learn your job( BTW real end game is glamour, its never ending ).