At any rate, lockets and inertia are your source of gravity. As soon as you get inertia in place (unless you really need the extra :gravity and only have 1 inertia), start setting lockets to air. Once even a single inertia is in play, jet stream pays for itself.
Armagio and defender act as shields to keep creatures at bay until your dragons can come out.
May be a good idea to include a momentum or chimera in case of shields, but usually isn't a problem.