ModernBill v5 Client Interface

Hello, I would like to customize ModernBill 5 in a few aspects. My plans are: -clients have complete control over domains in ModernBill client interface: DNS management, URL forwarding, E-mail forwarding -maintain ModernBill's capability of multilanguage interface Registrar modules I'm going to use: -eNom -Directi (will be avaible in January) Customization: -E-mail forwarding in eNom module -DNS management, URL / E-mail forwarding in Directi module (ModernBill support told me it will only include register, renew, transfer functionality) My goals: -if a client wants to view the settings for a domain registered through eNom, the client interface will show eNom services, if a client wants to change something in a domain registered through Directi, the interface will show Directi services (this is already possible in ModernBill, because one can use 2 registrar modules at the same time) Additional information: -I'm going to use eNom for domain registering and domain management (for those domains wich were registered through them) -I'm going to use Directi for DNS hosting, that includes DNS management, URL / E-mail forwarding (for domains that can't be registered through eNom or Directi) Thanks