A realistic expectation would be a class date after July or later if you got a call TODAY for an interview (at least that would be at skywest). Not sure what classes are like at the other airlines you applied to but at skywest, sounds like classes are filled thru may/June.

Still when you ever get an interview you can say you need certain days off and can't accept a class for your MUST go to trip to Europe. Otherwise for your goal you would NEED to accept a class in march to finish ground school, sim, and ioe, but then you got at least reserve right after that once on the line. So your goal becomes even less realistic. If you MUST take your trip to Europe, go before you have a class.