Chris, I was thinking along the lines of raised beds, with a plastic/ rubber barrier layer along the upper back wall and lower along the bottom edge of the inner wall and a permeable mulch barrier along the front wall and lower edge for drainage. I was thinking of keeping the plants in the pots and nesting them in a plywood shelf and then surrounding the pots with gravel .
The light situation from the windows would not be enough, as they are east facing, so only get morning sunlight. The room does have power though and I can install some LED grow lights. I would however like to switch this area over to solar/ wind.
I haven't addressed the heating of this area yet. It is very well insulated. All 4 walls floor and ceiling. Double glazed windowless ond a good door..