First Mods, wondering if it's that easy?

Just recieved the L&M lowering spring from NateDog. I was just wondering if it's actually as easy as they make it seem on the video, or will it turn out to be a 10 hour project. Figured I'd ask some of you guys that may have already done this. Any sugestions on compressing the shock to get the old one off and the new one on? I'm thinking about taking it to a shop to have them swap it.

I think i might also take off the rear tire off to put on the Side mount license that I pruchased from
( http://www.road6customs.com/online-shop.html#ecwid:category=337153&mode=product&product=1827453 )
Looks like it needs placed on the rear axle rod. Any suggestion for this one?

Thanks