I fly float planes for a living. Here are my suggestions:
1) Packing several smaller bags instead of a few big ones is much better.
No F*%&#$% hockey bags. Even bags half that size may not fit.
2) The medium Rubbermaid Roughneck totes fit perfectly in Beavers and through the cargo door of 185's. The big ones are too big and too heavy when loaded.
3) Use soft sided coolers and freeze all the fresh food you can (even eggs) so you don't need ice. Hard sided coolers are heavy just by themselves and they are a space vampire!
4) Don't tie
anything to the outside of your pack. It will get torn off when loading/unloading. Pack water bottles inside for travel
5) Don't pack water. It weighs 10 lbs a gallon. The bottled water companies have everyone brainwashed that lake and creek water is toxic and can't be made safe to drink.
6)Wrap the waist belt of your packs around the front of the pack, snap the buckle together, and tighten down the waist belt. Buckles get snagged when unloading and break off. I have seen a few sheep hunts ruined from not doing this.
7) Hard sided gun/bow cases don't fit in small planes. Period.

Pack a harmonica instead of a guitar.
9) Show up ready to load the plane...not your packs and boxes. Your 9AM departure time is just that. The time the plane is leaving. Use a separate bag for road travel with a shaving kit, city clothes, etc. It keeps you from having to break into your camp pack for everyday items you need on the road. Leave the city bag in your rig when you fly out.
10) Secure your cell phone in an upper pocket with a button or zipper when boarding and unloading. You need both hands to load safely and bending over is required. Leave the travel mug in your pack for the flight. You don't need it. It's just the adult version of a baby soother.
11) Be prepared to get your feet wet when unloading. Most locations don't have docks and many beaches are too shallow for the plane to get close to dry ground. Be prepared to get into knee deep water at the arrival point.
12) Pack a day or two of extra (freeze dried) food in case the plane can't get in on pick up day.
13) Be ready to load the plane at the pre-arranged pick up time. Pilots are on a tight schedule and have no time to wait for you to pull down camp and pack up. Some outfits are charging a hefty "wait fee" if you're not ready on time (like $1000!).
14) Have tarps and game bags for the pilot to use. Help him load.
15) You won't use a 25 lb propane bottle on a 10 day hunt. Use smaller ones. Otherwise you're just giving a bunch of propane a free tour of the countryside.
16) Everything weighs a whole lot more than you think. Everything. Weigh everything...you'll be surprised!
17) Float planes are a whole lot smaller than you think. If you can't fit it into 2 door car with a small trunk, it likely won't fit into a Beaver...So plan accordingly.
1

Have all the gear piled up and ready to load. All of it. It's an art to pack a small plane so when you show up with your day pack over your shoulder once the plane is loaded, there's a very good chance it will have to be left behind.
I'll quit there or this could turn into a rant
Best of luck and have fun!!!