In June, houses will be available again and there will be like 95%+ empty lots. It's only packed because they didn't have demolition for a year. When houses get too full, they add more wards. You'll be fine on whatever server you plan to be on. But, just know that the first 2 months after the demolition timer is over and 5.0 releases, it will be very hectic. There will be a lot of lots available, but maybe not the one you want. Server hopping for a house might not work as intended.