Hi there (kinda late to this), which gears are you looking at?
And I don't know if EB is viable for endgame, but I'm sure most builds can be used in endgame because of how strong we are at this point in the game. Though, I suggest going for a normal TFB build first and then you can start building EB, so that you wouldn't have wasted materials on a build that doesn't work.
Also, you can contact me on Discord, drunkonedps, for faster help