I hope you enjoy your Sitka.I do not see how their customer service could be as good as badlands but for your sake I hope it is.
I thought my 4500 would be too big. Actually it is my preferred pack once I started using it. The pack is simple 2 outside large pockets and the lid can carry everything I need including game bags and still be cinched down to be comfortable as a daypack. The thing is you cannot make a small pack bigger and if you need to load a small pack down you will find out what uncomfortable is really like. A smaller pack ( I have a 2200 and I just got rid of my superday) simply is not as versatile. I carried a pretty nice mule deer out of the Steens Mtns. with my Superday. It did the Job and went up for sale when I got home. I carried my Bighorn sheep out this year with the 4500 and I can tell you there is a huge difference in how the packs perform.