Migrate website to WordPress

I am creating a members area with different hosting than i currently have for daytradersetups.com

The themes are so far off from my current site so i was thinking (could be totally the wrong idea)
IF i could migrate the other site into the WordPress and covert and publish this site onto the server, then i can modify it into the new members section.

I could need additional help later setting up some other items there once i finish the layout and design.