Is there a reason you are choosing the Woodsman? It looks like you are limited to 3,000 or 4,000 cu bags and don't have any place for quick access to clothes, equip, etc. I guess you can likely add them on if needed but that ups the price. If it were me and I was doing much backpack hunting and packing game I would likely want something a little larger....but that's just me! A lot really depends upon your needs and style of hunting. I would advise it is always better to have a little larger bag than one that is too small! Your Kifaru frame will be capable of 100+ lb loads no matter what bag you are using. It is always nice to have the load in a larger bag next to your back rather than packing meat on a shelf with gear sticking way out from your body! Your back, legs, and rest of your body will thank you!
I have the EMR II and Timberline bags. The Timberline is smaller and ok for smaller loads. I really like the outside pockets. The "go-to" bag I use almost exclusively is the EMRII. It is almost overwhelming as far as size but is relatively light and compact when unloaded and cinched to the frame. I can haul and incredible amount of bulk. I've used and abused it on numerous Alaska sheep, goat, moose, elk, bear, etc hunts. I've loaded it with capes (some lifesized) plus meat plus camp. It also works great for loading turkey decoys plus tom. You can always cinch bags tight but if you don't have a large enough bag you are somewhat screwed.
I have never been a fan of hauling loose meat on the outside of a frame. I bone all my animals for less weight and bulk...it usually saves me 1 or 2 trips this way! It's always nice to secure the meat inside the pack and cinching the load super tight and to the frame. If you are worried about a little blood you can always put the capes/meat inside game bags or garbage bags.
If you are pinched for cash there are a few options. You can likely find a EMRII or other bag that is almost new for the same price as a Woodsman if you are patient and willing to search for a deal. I bought my kifaru frame, 2 bags, guide lid, etc almost new from the Rokslide classified section and also Craigslist/Ebay for more than 1/2 the price of new.