Vault: Work on tsukaharas or yurchenkos. A tucked is a 9.8 SV while a piked of either vault is a 10.0 SV.
Bars: Work on 1/2 pirouettes. Make sure to hold your feet at the end and finish your turn in handstand, its helps a lot. Get your casts and clear hips to handstand, it really counts now. Also, make sure you have at least somewhat decent giants in your routine. A layout flyaway will do for a dismount just fine.
Beam: If you don't have a series already, you need one with at least one flight skill in there. Most people do either back walkover back handspring or back handspring back handspring. You could also do cartwheel roundoff or front walkover bhs, but its a lot easier to do the backwards moving series' and they lead to more skills. Most people at this level do switch leaps now as well, so i'd work on those. A front tuck dismount would do just fine, but a round off or cartwheel into a back tuck would help out a lot in the future.
Floor: As you probably know, you need a two flip connection. You can either do this directly or indirectly connected. Directly can be done in many ways, such as these: (round off layout 1/2 front tuck/pike/layout, front hs front tuck/pike/layout directly into front tuck/pike/layout, round off back layout back tuck) Indirectly usually is only done like this: (front tuck stepout round off bhs back tuck/layout). Most level 8's have a backwards twist, up to a full. I did a 1/2, which like a full is worth a "B". You'll need a leap pass with a switch leap into another dance skill. Work on 1 1/2 and double turns.
Does your coach have the JO code of point? Since you seem to know the requirements from the USAG website, the Code of Point could really help you find the extra skills you need to fill your routines.
Good luck!
