There are more reasons to remain with movable type than to migrate to another content management system, but if you've decided to switch from movable type I would be glad to give you a hand.
As a very experienced movable type consultant in business for over 22 years now, I know everything about movable type and I would be able to migrate your project in a way which has no negative impact on your search engine positioning and optimization.
At this time I'm offering the service of migrating your website from movabletype to wordpress, but if you would like to switch to another platform get in touch and I could have a look at it.