You dont have to worry about getting all your "skills" down right away. If your anxious about soloing - then that should be one of the things you work to get over. Maybe you shouldnt put a lot of pressure on yourself - just jump belly to earth and enjoy the fall. Gaining confidence in this sport is just as valuable (or perhaps more so) than flips and barrel rolls. Flips and everything are tons of fun - but I spend more time just working on fall rate, turns, and simple motion.
I just got my A at the beginning of the summer - and its a trip not being the "new kid" anymore. In just a few jumps you'll be able to jump with anyone - and not all of them will be as practiced as a coach. Do whatever you feel comfortable with - but dont think a jump that isnt working directly towards license skills is a waste - every jump is supposed to be awesome! freefall puts everything in perspective