Appropriate pot size for a small cab?

I have a cheese candy seedling in a solo cup in my tent right now I was wondering what peoples' recommendations are for the volume of the plant's final pot. I plan to flower it in a cab with interior dimensions of 18 inches L (45 cm) X 14 in D (35 cm) X 19 in H(48 cm) with 3 or 4 35 watt 2400 lumen cfls; it will be in there by itself. I am planning to LST the plant or potentially SCROG it. So what size pot would you use for this space?

If you need additional information ask and I will answer as best I can. I have not painted or put lights or fans in the cab.... my last harvest has a day or 2 left to dry in there before I can mess with anything so my specifics for lights are what I plan to do it could change.

depends i would say half gallon to a gallon you dont have much vertical height

No I don't. Also thanks for the quick reply.
Would a wide and shallow pot be advantageous? Or would the plant still want to grow up/ vertically since that pot would have a larger volume?

The more soil you have the better, you don't want to underdo it and rootbound the plant when it could have used more soil. How large the plant gets depend on your training and lighting schedule. to keep it the size you want, depends on how long through the veg cycle you induce the flowering. Scrog is usually around 3/4 of the screen filled then flip to 12/12. I would try to find the best fit for the cabinet, I see cannabis grown in short wide containers all the time. The height can really be manipulated with these plants, and they thrive. LST and/or Scrog should be able to do what you want, the PC box grow guys do short grows all the time with shallow wide containers.

Thanks for the info. I got a 16in L X 12in D X 6in H its 11.5 liters.