#4
it'll say something like 4 ohm, 8 ohm, or 16 ohm on both the head and cab. just make sure you match them up.
i used to be a mod, then i took an arrow in the knee.
#6
It will work together fine. The purpose of a high wattage cab is to avoid speaker distortion. Or speaker break-up.
If you start a reply with: I have never played one but I have heard good things about it! Your opinion is invalid.