Changing my site from Drupal to WordPress!

Hi All,

My current site is built on drupal and is hosted by a company.
I want to totally remove my site from them.
I have designed a WP site with the same content and will swap over the DNS so the same url will be attached to my new WP site.
As long as keep and maintain the same URL structure as my previous site, so that all the SEO work I have done isn’t wasted, will there be any problems that I may encounter?
I love WP and it will give me back the flexibility that my current web company have taken away from me.

Best regards
Chris