if your planning on vegging in an 8x10 room your going to need and want more than flourescents. Im not sure if you are really planning on utilizing all of the space in both rooms but if you are this is going to be a pretty big grow and as such you will need some pretty major lighting. Ild say atleast 1000w in the 8x10 and atleast 2000w in the 10x14 and that is on the low side even at that your watts per sq ft will only be about 10-15 and you really want something more like 35-50. Assuming your not really using every square foot 1000w for one and 2000 for the other may be enough but I don't think you could really fully utilize a space this big with anything less.