Level my main so I'm ready for whatever new (big) secret(s) there will be. Those secrets probably won't be active the first week, so I have some time to get that done.
After that I will probably level my 11 alts together, zone by zone. Feels like it's going faster that way. Then decide what covenants each alts should get.
I will also try to make as much gold as possible, in whatever way that might be. Stock up on cheap materials other people way dump on AH while leveling, or sell everything I collect myself incase prices are high.