15k hands: check
Bankroll: check

Move up: check.

any other questions?

btw, if your game is solid i.e you know how to fold to aggression adn you can play aggressivly with position and float a little on predictable players there should be very little difference from 100nl to 400nl
Only at 400nl do you begin to find a group of mutli-tabling regulars who are long term winners. Seriously, moving to 100nl is no big deal other than that an all in is now 3figures