I was able to complete mine in just over 2 hours working solo. Keep the box they shipped in, it will be your best friend when positioning the sliders. A block of wood, and your OEM jack will be handy to have nearby by for positioning and help holding things in place. I highly recommend, as many others have mentioned in various threads, do this with a mostly empty tank of fuel, and keep that jack handy for supporting the fuel tank when you unbolt the skid. The jack, along with a large socket, I forget what size i used, can be used to put pressure on the tank strap through a hole in the skid, making life a lot easier come time to bolt everything back together. Start with the passenger side, there is less stuff in the way. I did choose to drill / bolt into the cross member, it is fairly painless, and can be done (carefully) once everything else is in place. You can touch up any drilled areas with some black automotive enamel.
You've Got This! Good Luck!