Feeder personalities are currently one of the top most requested features in the poll I'm running, so I think it's very likely that they'll be included in my next update.
There will be four different types of feeder to begin with and their dates will be similar to the current format, except you'll be on the receiving end and have to pass checks to resist their persuasion attempts!
When it comes to running the shop, try starting off with just a single employee until business picks up. Don't be afraid to fire them if money is running low! This halts all running costs, but you keep awareness of the shop for when you reopen and begin another marketing push. Once it starts making a profit, you can put those profits back into marketing and your income can snowball.