If it were I (and I do already live in an overcrowded small house) I'd keep the LF gear, at least one set, and get into contact prints, Harman Direct Positive Paper and/or paper negatives. If you don't contact print, you really don't need any darkroom space at all, just a changing bag and developing tank to process paper or film in your kitchen. A scanner connected to your PC/Mac shouldn't take up that much extra space.
With MF film, if you want silver prints, you're going to need a darkroom space and enlarger, whereas even for contact print from 4x5 you don't need the enlarger, just the darkroom space (convertible bathroom, perhaps). So the LF might save you space.
Ideally, you should have a 5x7 kit and do contact prints. Just a convertible bathroom/darkroom, a few processing supplies, no enlarger needed.