Good mix of LIGHTING for AUTO's

Should I learn more towards 2700ks the whole grow? since they veg for only about 2-4 weeks then go straight to flowering. Would this be more beneficial for autos because 2700k spectrum is good for flowering. Im thinking this would cause plant stretch in the veg stage with the plants those ( if i had more 2700k then 6500k ) . HELP!
 
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