I go with the more obvious and powerful ones, but nothing wrong with yours. Before the RTRs:
:arrow: clean the aura, which allows a better flow of energy
:arrow: invoke akasha, which is a primer for every work of witchcraft
:arrow: merkaba meditation, because raising your vibration increases your power and your ability to manifest
:arrow: raise energy, of course
There are many other ways that were in a sermon by HP Hooded Cobra.
P.S. Please, make it that nobody bothers telling me it is not necessary to clean the aura. That is like the ABC. It's suggested before every meditation on JoS and it's only smart to do for anyone who understands spirituality.