Considering a Bolt+

Am considering buying a Tivo bolt +. I currently own an XL4 Premier and currently have Comcast but would like to cut to OTA.

1. Any specials on transferring lifetime from a XL 4 Premier that may be currently running or has run in the past that may get run again?
2. Will my desktop 2.8 work with the Bolt + to transfer shows to a server?
3. Can the Bolt + be connected to OTA and cable at the same time? I would like to test OTA before cutting the cable.
4. Is there a way to add services...

Considering a Bolt+

Considering a Bolt+