Assumptions:
- You know and have intelligence about your target visitors and buyers personas
- At launch there will be low traffic volume
- Blog content will be your method of attracting visitors to your website
- Blog content will be targeted around low-mid competitive keywords
- Content offers will be provided in exchange for emails
- Visitor nurturing will be automated through your newsletter system
- Personal coaching services are system based rather than problem/solution based.

Based on the question and my assumptions, I would recommend offering your content for free. Give offers (more valuable content) in exchange for email addresses and provide more useful content, sell information products/coaching services via lead nurturing automated emails.