do both, use instagram to promote steemit the way I have been instagram.com/ackza770 then make steemit posts like i do to show how you use instagram to promote steemit, get paid off that post use it to run ads, make posts about the ads, etc etc
ad u should do BOTH u acquire steempower By promoting steemit! use ur own steemitblog link steemit.com/@joshvel to promote steemit and yourself!