250w tent grow- g force and a heat question

hey guys going for my 3rd grow. my first 2 were done in a closet with a light and nothing else. finally got a nice setup. using a2x3x5 grow tent with a 250w mh for veg and a 250hps for flower. i have a 170cfm fan and a 70cfm booster in one exhaust and a 70cfm booster as a second exhaust. im having some temp problems tho. they hit 98 today and its just the second day in action. have 5 seedlings in there now. should i get an intake fan to cut down on the heat? i think i have everything else covered so ive got some pics here so any input would be greatly appreciated.

thanks