If you feel comfortable, I say go for it.
Other people will find it creepy. You might get called a gold digger or something like that. As an aside, make sure he's not married before you go any deeper.
> I'm a 21 year old female and I've never dated before.
> We have plans to meet inside of his house for the first time
I hope you understand that in his mind he most likely views this as an opportunity for sex. If you're not ready for that, bring along some pepper spray and let friends know where you're going.