how many lenses?

So back in December I added a 'nifty fifty' to my lens line-up as it has some advantages for street photography.  However in the last couple of months I have been using just my 35mm and 75 mm which again I only use occasionally.  I also acquired a Q2 which has a fixed 28mm lens, so if I take that as well I have a good combination of auto-focus and manual focus shooting and a range from 28-75mm. So the question is, should I sell my 50mm and 25mm?   Food for thought!