Regarding buyer personas “Will there be enough traffic in these groups that will sustain a business and what products will be needed for each group?”
That is unpredictable and has to be tested on a group by group bases.
Unfortunately, there is no way of know where a visitor comes from on Facebook other than “Facebook”.
Having sold pet supplies on the web for 18 years, I can unequivocally say “building an eCommerce website is not a solution to your financial goals.
It’s the single biggest problem you’ll need to unravel for success”.
Oh yeah, when you get admin access, for the first time click on EVERY link up and down the dash.
Learn what each link does, what it tells you or if activation is required for functionality.