I'm trying to maximise the space in my g-house and want to use the floor as well, so I'm planning on using 2 gro-bags with those green plastic open-ended tubs that you insert into it, fill the inner pot with compost, plant your whatever, then water via the outer section. Question is what to plant and how to arrange the spacings to get the best results. The plants I'm considering are 2 plum tomatoes, a cucumber, melon (1 or two?) and a climbing French bean. Bag 1): 2 toms but can I fit in one of the other plants as well? Bag 2) Open to suggestions as I've never grown either cucumber or melon before. I also have some big pots I could use for whatever I can't fit in.