i would go with the T5's since you plan on running both a flower room and a propogation room simultaneously, running 2 HIDs can add up in electricity not to mention the fans that cool them, however nothing can compare to the way a MH vegges mj so bushy and short, ive always done mh/hps grows and loved the results, flouros are great just not my cup of tea, but 2 months of veg under the flouros till your 1st flower crop is done will probably work out extremely well