I have two cabs: a GK 410 RBH, and a Mesa 115. Both cabs are each rated at 8-ohm. The Mesa has a parallel speakon output, but the GK does not. Currently I am using a GK 1001rb to push them. My question is: should I be running one speakon output from the head to the Mesa, and a second speakon connection from the parallel output of the Mesa to the GK? Or should I run a separate speakon connection from the head to each cab? I would assume that running the speakon connection from the parallel output on the Mesa to the GK creates a 4-ohm load due to each cab being rated at 8-ohms respectively. Would it also be a 4-ohm load if I run a connection for each cab directly from the amp? If so, are there any advantages or disadvantages in either of these setups?