My 'little' Ryder isn't old enough to pull this year (he's 9mo right now), but he definitely has the pull drive and he stays on the path (even when we went on a walk with my sister and her dog in a fenced in dog park and he was off leash, he stayed right on the path), we think he wants to be a little lead dog.

In my state/area there are multiple places that do Skijoring and mushing lessons, and most prefer that the owner has some cross country skiing experience. So I figure if I get skis this winter and acclimate myself with cross country skiing this year, and work on commands and such with Ryder while on walks/jogs this winter/summer/fall, that next winter we might be ready to give Skijoring a try and take a lesson or two.

Would love recommendations on best ski types (touring, skate, classic, ect.) for Skijoring? I'm also, eventually, going to be looking for good place to get a pulling harness for Ryder. Are they adjustable or should I wait to buy one until he's full grown and actually ready to pull?

Well I can sure enough get you started. For ski's you would want a classic striding ski, Diagonal stride would be the back and forth motion to move forward. Skate ski's can be used if you have a groomed place to use them, they need the snow packed down more than striding ski's. If this is your first pair of ski's you will want a wax less ski, this means it doesn't need wax to grip the snow, it will have a pattern like fish scales or tiny boxes for about two feet of the middle of the bottom of the ski. Ski's are "cut" to work well on different types of snow, groomed trail, make your own trail, and back country, A good choice would be a ski cut that you can use on and off a groomed trail. Who makes the ski really doesn't matter unless they are going to pay you for using them! any of the major named ski's are going to fit you needs. Most important would be good fitting boots. Buy the best boot you can afford, then pick the binding(the boot will dictate this) and then pick a pair of ski's. Good ski's can be had for 150 - 300 dollars, excellent technical ski's can had for over two thousand dollars, and don't make a living running ski races, you don't need them!
Now start interviewing ski shops, yes good deals are on the internet but if you are just starting out a shop can really help you get good ski's, proper fitting boots and equipment, plus should something need repair or you want your tips and tails waxed then you have a place to go (no wax means no grip wax but tips and tails can be waxed for improved glide).
Dog equipment can be found on the internet and would almost be impossible to find without it. Most users of this forum get harness from Nordkyn Outfitters in Grahm, Washington, or Alpine Outfitters. Do a search for Dog sled equipment and just about all of the venders will pop up. For a Skijor belt if you know of people currently skiing with there dogs try on there belts and see what you like! Mostly make sure it is well padded on your back. Last two bits of advice, Check out "Skijor with your dog" and "Cross country skiing for fun and fitness" two very good resource books that can probably answer any more of the questions you might have. I started cross country skiing back in the late '70s, skijor in the '80s and I'm still at it all these years later, it's great fun and exercise.