Hi,
Welcome to Bodhost forums
With regards to your questions -
1. If the control panels remain same, we can take care of the migration of accounts. As of now, we offer cPanel and Plesk. cPanel to cPanel will copy over complete data. Coming to Plesk, different versions of Plesk may not allow to copy over complete data.
2. We highly recommend having cPanel with your server, assuming you'll go with one of the Linux Plans. cPanel is quite user-friendly and designed to make administration of accounts easy.
What control panel are you using with the current host ?