Great thread! Thanks for all that have contributed, I got a ton of good ideas
I got to see a STOL 7000 in person at SG, definitely grabbing one of those- will fit my SG 5400 with plenty of room to spare.
Good ideas on having some of your hunting clothing (and boots) on your person. Also like the idea of having your optics close at hand, won't get messed with and can't get lost.
I also like the idea of the Yeti soft side cooler as a carry on, looks like it could haul a decent bit of meat back. Of course the STOL 4000 looks pretty good too as a carry on.
With your carry on you can also have a personal item (small pack), thinking my Serac would fit the bill for this.
Leaves me just checking a rifle case and the 7000.