[JMan]

One way that you can go with the digi001 interface is buy the Tascam IF-TAD converter. It is specifically made to transfer data from TDIF to ADAT format. I would assume that this would work great in between you 88's and the digi001. The IF-TAD goes for around $160.00 us. So, For about $1000.00, you would get the digi001, PT 5.0 LE, and the converter to get around your interface issue for an extremely low price.
I would probably go this way, except I have ADATs, becuase I think PT is one of the most intuitive and logical DAWs out there.

Jason
Canned Records