When you say long hike do you mean day hunt or over night? Also since you say long hike I assume that means you plan on coming out with an animal in the pack as well. The affordable option is the Eberlestock dragonfly or the dragonfly m. The dragonfly m has a widemouth scabbord and is probably better suited to handling your setup. This is a nice pack and I have used it. You will feel little difference with this pack until you get over 40 or so lbs. So when you get that animal in it is when you will start to want for a higher quality pack. I prefer this to the j34 because it has an actual frame in it to help with the weight.
Now stepping up to a higher level pack will cost you, almost double, what you can get an Eberlestock for but I personally have never regretted the decision. The amazing weight carrying ability and versatility make it easily worth it. I run two different setups depending on the trip, both are on a kifaru duplex frame. For day hunting I run the duplex frame with a nomad bag and Eberlestock scabbord strapped down the middle. I use a grabbit and kifaru meat bag to strap the boned out animal or quaters to the pack. This is ideal because it puts the weight of the rifle in the middle and is easy to balance the spotting scope and trips on either side. For overnight hunts I use the same duplex frame but use a dt1 bag. I then use the auxiliary gun bearer and swithed the buckled over to autolocking buckles on the gun side. It's harder to balance the load with this setup but I xan do it with the backpacking equipment. I dont have many good pictures handy of my nomad but if you want more I'll try and find some.