hmmmm ..
well fist of all ...
odour WILL become a problem .. unless useing somekind of activ carbon filter with a ventilation pulling the air out of your grow room ..
I hear stories about Ppl. witch neighbouring tell em they can smell it when they turn around the corner 50m down the street or across the road ..
realy .. I did´t know either to begin with .. I had 2 small 3 weeks old kush plants in my appartment .. and the stink was like realy bad male catpiss fist I could only/mostly smell it when I came home .. but 4 weeks old I had problems even to stay/sleep in my appartment !
and in flowering it get extrem .. as I see it .. a good filter/ventilation is as importent as light and water .. you realy cant do this half ..
2 hrs after mounting my filter and ventilation I couldnt smell **** all gone
one of my if not the best investment I made (130$ in total)
but lemesee ..
if I would imagen it was me .. had a garages I use .. but still want to grow stelth and be able to even move em ...
hmmm... how about one of them boxes they use at concerts .. thats spring in mind .. you know the roadis push around with stuff in them ..
wooden boxes .. like 4x3 feet and 4 feet high or so .. I bet you can get em in diffrent size .. but Nm. I would build it myself ..
make it maybe big enough to fit a 4" 4 tube T5HO fixture in ther and do autos/ScorG ..
so maybe +4" long and 2" feet deep and maybe 4-5 feet tall .. and put weels on it so I could move it if needed ..
make holes on the back for wires and intake/outtake and put it in the corner aginst the wall .. could even put a lock on it
put some boxes around it to cover it up for your nosy friends ..
dont make it out of new wood and place it in the middel of the room alone is what Im trying to say I guess ..
I would build it out of playwood and 2x2 wood sticks ..
mount some small weels ..
paint it white inside ..
fix the T5HO fixture a few inchs from the top (why I would choose T5HO is so I dont have to worry to much about heat and noisy ventilations aso.)
I would not move the light fixture .. I would make a shell for the plants I could move up and down ..
and I would make a DIY out take on the back of the box .. over the light fixture and fit a carbon filter or two infront of a cheap bathroom ventilation (or a more expensiv one .. twise the price can get a realy silent one)
sumthing like this:
and make some small holes in the bottom/under the box for a passiv air intake and a extra for the eletric wire (place it next/infront of a light switch)
and fit a small clip on fan in ther to make some air circulation ..
then the box is more or less ready I guess ..
then I would buy 2x6500K tubes and 2x2700K tubes and grow 2-4 autos with 18/6 light all the way ..
maybe in small coco pots .. or even DWG once I had a few good haverst with normal soil and got it all under controle ..
note: this is just how I might do it based on the info you gave me .. do some more research .. and find out what might be right for your needs .. and what works ..