four more weekends before Crystal closes for the season
I don't know where you heard this from, but Crystal will remain open until there's no snow left to ride on, which was all the way until July 16th last year. The snow pack is deeper now than it was at the same time last season, so it's reasonable to expect at least until June, maybe longer so long as the temperatures don't stay too high during the spring.
Your only problem will be that those last couple weeks will only see Green Valley running, and that only serves hard blue/low black terrain. By the time that rolls around you should know whether you can handle those runs or not though.