floros on corners of growtent,anyone try this ?

i have 120cm X120cm X 200cm grow tent with sunmaster 600W dual spectrum hps.

my plants are second week of flowering. i grow 7 girls.
i am thinking of putting 4 X 36W ( 120cm ) flouroscents on the corners of my grow tent .( 1X 36W floro for each corner )

is it good idea ? is there anyone try that ?

temp is between 20 and 28 ( even 30 sometimes ) .if i put floros, will temp increase ?

PS: i have good air circulation.

thanks bro . i couldnt find the topic about remote balllast for floros, please could you give me exact link ?