nothing wrong with stubborness. it's your team and you should do it your way. that way, win or lose, you did it your way. at the same time, though, when you ask for advice...
dark elves are a decent tourney team, and a witch elf can be effective, you just have to be prepared for her not to be.
bottom line, my suggestion would be to either make an 11 elf roster with no witches (such as the standard 4 blitzer approach) , or if you want to do the witch, make a 12 elf roster, or 11+ apoth. (such as the one i suggested previsouly).