Yes, we as coaches and UA in general only us hrTSS so go ahead and change your rTSS to hrTSS for all your workouts. rTSS is calculated from a completely different formula.
And yes you will have access to your training plan and the videos once the 12 week program is over. Your TrainingPeaks account is currently a premium account that is paid for by being a member of the FUA Group. Once the group sessions ends you’ll be downgraded back to the free basic plan. If you want to use the premium account feature you’ll have to pay those fees which I believe is around $20 a month.