As for cold crashing, Wits are generally supposed to be cloudy, so if you're aiming for true to form, I wouldn't do it. That being said, if you would prefer it that way, go for it!
Also, definitely make sure you check your gravity. Wit yeast always takes forever to finish for me (usually around three weeks in primary).
Hope it turns out great!
"Sometimes when I reflect back on all the beer I drink I feel ashamed. Then I look into the glass and think about the workers in the brewery and all of their hopes and dreams. If I didn't drink this beer, they might be out of work and their dreams would be shattered. Then I say to myself, It is better that I drink this beer and let their dreams come true than be selfish and worry about my liver."