Flowering under T12 or T8

Heres my basic story i have 2 mothers that have served me well and are ready to finally bud with new mothers ready to take their place. Right now i have the 2 mothers under 2 T12 fixtures with 2 daylight bulbs (6700k) and 2 soft white bulbs (2500k?) All at 40 watts each. I also have a main veg room that i pretty much emptied out. It consists of 3 T8 fixtures with a total of 6 daylight bulbs. Should i keep the mothers where they are at and just change the light or move them to the bigger veg room and change those lights to some soft white bulbs? This is a soil grow btw. And i do have a hps but it will be full for another 4 weeks.
 
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