First CEC in kettlebells or Pilates?

Brand new trainer with ACE cert. Going to start part time at small gym contracting, and in home sessions.
Is a male Pilates instructor a turnoff for clients? Kettlebells seem like an effective and inexpensive way to train in home clients. For me first CEC, which one is better? I could possibly learn both by the time my CECs are needed. Which should I do first?