Max your camp out and never donate financially again.
Sell jewelry rather than donating.
Just restock supplies through the ledger.
Your horse can hold 16 animal pelts and small animal items.
Keep that shit filled.
The trapper and fence should be your best friends.
Selling stage coaches may be too tedious for the return.
There's a ton of loot chests scattered about the various camp sites.
Use instinct mode to find them.
Make sure you're looting saddle bags.
The O'Driscolls carry gold nuggets in their saddle bags.
Look out for black smoke as you're riding around
those are either homesteads or hideouts that you can rob.
Always use the instinct mode to find those loot boxes you might not see otherwise.