Hi Mary J
I wouldnt say you could grow succesfully with a single tube, also a freezer is very small, atleast mine is.... its only 50 cm's high and wide....
so i dont know if you have one of those big body bag freezers
IF yes, then yes that would be a neat area to start a vegitation area... But only VEG !
I would recommend you spend 600 dollars on a growbox, charcol filter, Lights, Reflectors, pots & Earth.....
Buy the best you can with your budget, if you need help with it i can help you out.
As for the Florescent light, its not going to be good in veg either... maybe for clones & seeds but after that you will want a 400w mh or hps with blue light.
I would just buy a 600w with 2 bulbs, one for veg and one for flowering..
this way you wont have any problems vegin and flowering, the only bad thing about it is, that you can flower and veg at the same time..