Installation: (I own the game on Steam I don't know about other platforms.)

Documents/Rockstar Games/Red Dead Redemption 2/Profiles/[INSERT PROFILE HERE] 
Then place SRDR30004 there

Details:

I haven't studied any animals or horses but I have killed/skinned
all the necessary animals to make every camp/satchel upgrade.
(Including for when you buy the Leather Working Tools later on for Pearson)

No missions from Chapter 2 are completed, you'll spawn at camp at 9am.

No random events or strangers talked to (Excluding 2-3 O'Driscolls who jumped me)

Satchel is full of ammo, player and horse consumables, and tonics.

Contribution box has $551.64 in it while Arthur has $298.65.

Honor is more or less in the middle to suit either playstyle.

Every gun is unlocked for purchase. I left most unbought but Arthur does own the 
Cattleman Revolver, Double-Action Revolver, Sawed-Off Shotgun, Pump-Action Shotgun, 
Carbine Repeater, Varmint Rifle, Springfield Rifle, Bow&Arrows, and the Rolling Block Rifle.
All gun cosmetics (metals and varnishes) are default but I upgraded the 
rifling on all of them.

Every Challenge is completed and Legend of the East outfit is available for Arthur.

Arthur's Horse is almost max bond level.

Whole map revealed.

Arthur's Wardrobe has been updated.

Change Log:

1.0- Initial Release
1.1- Added High-end horses (Arabians & a Dutch Warmblood) to stables