Reinstalling WordPress Multiste from scratch

OK so Here is a break down of what happened and my problems already. I have a dedicated IP address by the way.

I had a MS install that when I used my address it resolved to my sign up page.

I decided to do a full re install.

So far I have manually installed WordPress. I tested my IP address and when I plug it in I get my IP address in the address bar. does not show up when my IP address is entered. Is that ok?

Can I proceed to install my multisite installation or is there something I need to do to make sure it works right.

What I need is my dedicated IP to resolve to my domain name for domain mapping purposes when I have my MS installed. Am I ok to proceed?