A:AnswerI’d run the kicker mono while wiring both subs to 1 ohm.
The box you choose will make the biggest difference. Please stay away from pre-fab boxes.
Please buy quality wires and have a good ground.
A:AnswerNo. I don't know how much they charge in your area but their installation fee includes the kit and the adjustment but only for the volume of your radio not the adjustment for the base.
A:AnswerNo, it does not. For this particular sub and amp, it is $100 for amp installation, and $20 for the sub installation. You will need a wiring kit as well in order for them to install it. They will tell you which one it is when you set up an installation appointment.