newbie with 1 4 foot 8 tube on top and 2 4 foot 6 tube on sides

Hello to all I am wondering if I have the right set up all tubes are 6500k going to get the 2700k tubes for budding. do I use 6500k untill budding then change all bulb to the 2700k?

Sure.
Or you could do a mix of both, like 4-2700 and 2-6500.
Vise-versa in veg.

*edit
Any number will work, just more 6500k in veg, more 2700k in flowering

Thanks for reply I have 20 bulbs total all running 6500k bulbs when i flower I am going to use all 20 2700k bulbs new to this just want to stay away from the heat that MH/HPS produces

Heat's definitely the downside of HIDs.
Have you checked out any of the threads on flouros to see what others are doing?

been looking can't realy find the answers i'm looking for