Could you start on a smaller scale, where you wouldn't need a site -- such as dog-walking and pet-sitting. That way, you could build up contacts so that when the store opened, you'd already have some clients. And, in the meantime, make money doing what you love.

I have a friend who pet sits. She gets to stay in wonderful places with pools, etc; they leave her great food in the fridge, and she earns $50/$60 a day plus having most of her time free.