Coach, I wish you luck. The gym biz is exhausting, doesn't make "the millions" and has extremely long hours.
Dave and Laree Draper said the 2 greatest days, the day they opened their World Gym, and the day they sold it.
You have some big-name clients, where word of mouth can work in your favor (referrals). Maybe try to get on some Podcasts (as a guest) like Super Human Radio and "Advices Radio", it's good advertising for your business.
Advice's has some good one's where like minded folks as yourself can go on, discuss training, gear, your biz, etc.
Anyways, again, good luck! Keep us posted...