Yes select the enthusiast model, that allows up to 10 VINs for access to maintenance functionality, and no special cables are needed
The PC software version is now V1507.2 so you will be downloading that after your WiFi arrives, yes it supports both models, they are the same on all the ECU's. There is no difference in firmware in the ECUs between the Strada and Terra
One aspect of real time recording on both Terra and Strada is there is no room to place the GS911 under the seat, we worked out that fitting a smaller Lithium battery like the EarthX or AntiGravity freed up space. The info on that is over at CafeHusky in the Trivial Battery Thread