With how harsh IG has been on API Calls, I can't picking another tool outside of Jarvee. They have a full team that updates the app according to IG changes.
Pro tip: If you are thinking about doing IG M/S. I recommend the Pro Plan and above. There's no way you can do M/S on any lower plan with...
I wouldn't suggest growing using a chrome browser bot. They don't have the capabilities to make it as human as possible and in the least amount of API Calls as possible (i.e. following X people every X hours, following a list of pre-scraped users, etc).
I think you're focusing too much on marketing and less on the content. Since you're starting out, focus on the content first. Find out what your niche is and once you got that down start looking marketing.