Changing WAP&ADFS SSL certificate from a GoDaddy Issued to CA issued

Dear Guys,

I am planning to decommission our Godaddy issue SSL certificate used for WAP and ADFS. Since everything is moving the cloud. I dont see the point to keep paying the old SSL certificate issued by GoDaddy. Instead I am thinking to get CA issue internal certificate to get WAP and ADFS connected. Is this totally ok to have new internal certificate? Any security concerns? If we decided to keep two services still published via WAP and ADFS, do we must keep the current SSL certificate issued from GoDaddy?

Thanks

Nameless.