Excellent choice, Supe. That will serve you well. You will really appreciate the stainless steel on about your first wet overnighter.
Here is the lowest riding holster I have found, offered by a company called "Hunter". It sounds like a good idea at first, but I've found mine to be actually too low. It just flops around too much when you walk. The leg tie-down looks like it would help, but I just found it annoying:
https://www.midwayusa.com/product/1021532308/hunter-1060-frontier-holster
My solution has been to simply use a normal high riding holster with a large enough belt loop on it to where I can slip it onto my back pack's waist belt. That's right - you don't wear it on your belt that holds up your pants, you wear it on your back pack waist belt.
When I do this, I sometimes prefer to wear a right handed holster on my left side. That way the grip points forwards. If the grip points backwards, it can wind up constantly banging up against the back pack, which can get pretty annoying. Of course I'm referring to full size, overnighter back packs, not day packs.
If going out on a day hike, or wearing a day pack while hunting, I simply wear the gun in a right handed hip holster of my right side, in the traditional manner. I just wear it on my belt that holds my pants up.
Many (most) leather holsters will not have a big enough belt loop to go over the typical buckle or clasp on a back pack. The "Mexican Loop" style holster will almost always fit, though.
Hunter makes a couple that work very well. Here is one of my favorites, because the loop part unsnaps and opens up to go over the belt, so you don't even have to slip it over the buckle:
https://www.midwayusa.com/product/816316/hunter-1100-snap-off-holster
Here is their Mexican Loop design that works quite well:
https://www.midwayusa.com/product/1021262777/hunter-1082-single-loop-holster
Either of the above can be worn on the back pack waist belt or on your pants belt.
The other option is, of course, nylon. Nylon is obviously better in our wet weather. I've found Uncle Mike's holsters to be top notch. I like their Sidekick for wearing on a pants belt, but they might not fit over a back pack belt buckle:
https://www.unclemikes.com/products/holsters/sidekick-holsters/sidekick-hip-holsters
I like my Bianchi and my El Paso Saddlery "Tom Threepersons" holsters as well, but they have small enough belt loops to preclude wearing them on a back pack waist belt:
https://www.midwayusa.com/product/1336394062/bianchi-1l-lawman-holster
https://www.midwayusa.com/product/156553/el-paso-saddlery-1920-tom-threepersons-holster
I know, I know - probably too may choices. I would lean towards the Uncle Mike's for sheer practicality and resistance to our weather. Its only question mark is whether its belt loop is big enough to slip onto your back pack's waist belt. Most gun stores will have one in stock, so you can bring your back pack in and check. Even if that's a no-go, buy it anyway, for those day hikes. Then go looking for one of the Hunters shown above - they might not be in stock just anywhere.
You might be getting the impression that holsters are a lot like women's purses, in that we need several for any given gun. That is absolutely true - we need to "dress" for different "occasions".