Product Roadmap - Need your insights

Hello So I am launching my first product at the end of this month. A Social media planner, made in Notion. - https://bizbox.club/ You can plan your content across all platforms, plus email + podcast, and blog. Also a library of resources and tools. I will launch it with a price for all template and those who buys it now has access to all forever The idea is that after each month I release a new feature, that will make the product a business dashboard, not only a social media planner. Can be: New tools and resources New templates ( marketing, sales, etc) No code tools ( review, user case, etc) So after I launch the feature I pretend to have a 3 different payment tier: Free - Some social media platforms included, plus some resources Monthly- Pay per month to get access to each new feature One-time price - pay once and get it all forever. Do you think is too much or is it a viable idea?