Wellcome! We don’t have as many suicides here as we hope. Most of us like the safe world 8)
Not all the files can be repaired. This was discussed a lot in the past. Only the virus listed on avast Cleaner could be safely repaired for sure. Others, maybe. The only secure thing: backup ;D
No, the VRDB is the same for Pro and Home version.
This was discussed either… I short VRDB period could led to loss of data, specially if you install software regulary. Better is one week (see avast settings link in my signature).