I owned a set of FF550s many years ago.
They were a top-notch kit that came with everything that you will need.

I do not know the limits of your mechanical/electrical ability, so to say whether or not you could do the install yourself would be a mistake.
Can you change a (vehicle) lightbulb? Fuse? Install a radio? If you answered yes to these questions, you most likely have the ability to install these lights yourself.

The most difficult part is mounting the switch, and that really depends on how creative you want to be.