Joz, a large pot sounds great. 24 inch diameter is good, but remember, to really 'let 'er rip,' every year or so will need to repot. Brugs are famous for eating all the soil and nutrients in it, and quickly. Remember, it's solanaceae, same as tomato, pepper, etc...heavy feeders

I've never seen a tutorial on pruning, but it's easy. Brugs like to vegetate (a lot) from the main trunk. I like mine to tree-form, so I am constantly picking these new leaf sets off of the trunk, forcing the plant up and towards it's first set of Y stem (these are the ones that flower) Yes, 7 feet tall will flower.
Just remember to never prune off your 'Y' stems, or you'll never see a flower. All of mine make these either right at ground level, or within 3 feet of trunk growth. Of course, if your'e going to overwinter and need to prune to ground level, you can, just stop feeding and keep only very slightly moist during winter. It will re-grow in spring when frosts are over, you bring back into light, and start feeding it again.