Ciujbauanswered grow question 3 years ago I'm having a mars hydro TS1000 in a 70x70(CM) and I've grown 4 plants in a 11l pots and It didn't let me down at all .
Yours seems that is a 60x60cm tent , If you'll have 2 TS600 you should be more then fine . just adjust the height properly since you don't have a dimmer on TS600.
CFLs are getting hotter right ? depends on you tho , I've started growing with LEDs and so far I'm very satisfied as it wont get too hot on plant canopy .