Welcome to Planet Virus.
Personally I'd hold fire on the Steinberg MR816 to see how you go with the TI2. Shame to spend next to a grand just on converters just for the Virus. But if you're really after a fully fledged interface there are also other great interfaces to bear in mind such as the RME Fireface range, Focusrite Saffire, MOTU 896mk3 et al, some even with MIDI I/O.