I would wait a few days-week after the tops to recover.
Then transplant to 5Gal.
Then take the next few weeks to get all your tops to an even canopy: lst/pinch/twist/supercrop to keep the stretchers at bay.
Then flip.
SmokeMyPiece Reviewed by SmokeMyPiece on . Grow Closet Help Newbie here so here are the facts; Just started a "Grow Closet" 8' x 4' x 1.5' & have 4 "white widows" x 1.5 weeks looking ok but need help with particulars! Soil is 2 parts peat/1 part hummus w/manure, 1 tbs "Plant-Tone", & perlite. Using 2 40w cfl's & 2 45w screw in cfl's producing 3000/5500K respectively & are left on 24/7. Walls are white, temp is 88F or 31C, RH 40% at best & this is with misting the area using a fine mist spray every 2 hours. All appears fine & the leaves look nice. Rating: 5