Should I start my New Job?

Apparently, I got selected in HCL Technologies as a Network Analyst. But I’m really confused about joining because this role gonna be completely new to me. I’m up with SEOs and Freelancing for a long time and I really love doing it. And, if I accept this Job Offer I’ll undergo a 6 months training on my new role, later will be assigned to a 8 hours weekly Job. Just need a friendly advice. Will it be a wise decision to join the company?