Good to hear you are here, er.... Sipes are best for a lot of the winter driving where the snow blows off the road and leaves black ice, so your Geolanders should be good with those and chains, which I actually have some for that size tire(285/75-16) if you need some cheap. I cannot use them on my 35's on the 40. They are the zinc coated ones with twisted links, cam locks and the bungees.
Are you on Facebook? We have the Horsetooth 4-wheelers group on there where we get much more traffic and can plan the runs much easier, since a lot of people use it, even non members. If not, I can still post them all in here. (I have missed a few since we have been doing a run almost every weekend and you will notice nothing was posted in here :S )
We will probably be hitting up Cherokee park road soon also, since it is a favorite for snow busting every Winter/early Spring.
Welcome!
Our property is off of 82C which is actually off of 80C/ Cherokee Park Rd. I've been taking my truck up there a lot lately. Let me know what you want for the chains and I can swing by and pick them up. I'm pretty free this whole week. I'll Pm you number. I'll be sure to check out the Facebook group so I can stay up to speed.