It's worth a call, a glass shop may be able to fix it. Or at least price it to you both ways.
I've replaced several windshields over the years in a number of different vehicles at a bodyshop I worked at ..and certain auto restorations I've done. It's not rocket science ...and I'm sure there are some videos how to do it. But there are a few key 'tricks' one should be aware of to not screw it up. The clean-up part is easy, but the glass should 'sit' a certain distance from the surface per mfgr specs, especially when trim is involved ..or it'll look like crap. If you haven't done one it's going to take you 3x longer than a glass installer and you'll need to buy a removal tool (or two or three possibly), the adhesive and a primer/solvent ..and I don't know if you need a new gasket for this windshield (I think so). Sometimes you don't know what removal tool you'll need till you get into the job depending if it's been replaced and what ya run into. Old school braided wire seems to always work the best in my experience, but I've had a few that were a real SOB to get out and took a lot of time and swearing ...and others that came out in about 5 minutes.
By the time ya buy the stuff ...and figure your time, yer not saving any time or money. For the little they charge to install, it's hard to suggest a good reason for doing it yourself unless you 'just want to'. Even bodyshops nowadays usually hire it done too. An added level of difficulty you might run into on your H3 is the height. Glass installers will have a stand to work on and either a helper or helper-arm to guide the new glass onto the vehicle. This time of year they might want you to bring it to their shop where it can sit in warmer temps till the adhesive crosslinks.
Where it sometimes makes sense to do it yourself is when a guy has the windshield out already for a repair of some sort, or restoration (sandblasting or metal-repair around a rusty windshield frame). Then, when yer ready, drop in a new piece of glass. The argument against it is the windshield is part of the structural integrity of a vehicle and there could be potential liability (as well as safety) rammifications if not done properly by a 'professional'. That's why most bodyshops hire it out -- avoid liability.
Sorry to hear about the crack. Good luck anyway