Sounds like you need more kegs.
I agree. You can never have too many. But I think the wife would object.
I must have twelve or so down in the basement. Off the top of my head: light lager, honey lager, Chimay, dopplebock, saison, cider (one fiver and two 2.5 gallons), root beer, pumpkin ale, x-mas ale, ESB, carbonated water, maybe one empty.
Some of these, like the x-mas, pumpkin and cider, just need to be bottled so I can get the kegs back in service.
Or I need to throw a party and empty a few of them.