How much do you plan to cover with your skid plates? Full bellypan like this?
Based solely on the tire size you've listed (I may be way off here) I am guessing you are not going to intentionally look for rock gardens to traverse or pick the hard lines (when a less extreme one exists) so the full skid package might be a bit much.
In the interest of cost efficiency, my vote goes with picking up
used:
- front skid only to protect your lower radiator area and oilpan which is easily damaged if it ever sustains a hit. (Something like a Budbilt skid comes to mind.)
- sliders are nice but you can get around them by stacking rocks and taking things slow. On the upside, they will pull dual duty everyday as a step for you/ your passenger and protect your rocker panel area from damage.
Both serve important purposes so eventually, you'll probably want both. For the time being, which meets your immediate requirement(s) best?