I looked quickly at the link, and I saw NO dimensions. I'm highly suspicious of it being anywhere near big enough for the 8-10 chickens and even 4-5 might be too many.
Even if you let them out while you're home, you will be gone for hours. There will be days when the weather is crappy and they may want/need to stay in the coop.
Where are you located? Just the state is fine, if you're in the US, or the country if you're not. Climate matters, and knowing where you are helps us give you better advice. What works for me in Michigan can be totally inappropriate for someone in Florida or Alaska.