Mostly, it'd be figuring out a character concept to go with (including servant, chances are), and deciding whether or not I have the time to do another RP.  

I am pretty familiar with FGO proper, and no stranger to wiki-diving to get the gist of things, so should be fine.  Also, honestly not all that worried about personally breaking rules of the setting, since the biggest rule seems to be that Nasu breaks every established one of his all the time.