Find robo dogs

There doesn't really seem to be much of a bonus for clearing an outpost stealthily.

In fact, the max CP from a base capture I've gotten was from this strategy:

• Run into the outpost like your face is on fire, and mash the green "Mega Shields" button to drop the shields, which spawns a Blood Dragon which rampages through the base
• Stay on the periphery of the chaos and execute takedowns and headshots on unsuspecting soldiers
• Once everyone is dead (or nearly so) find a mounted gun and off the Blood Dragon (worth a large bonus - 5000 CP per kill)

Once everyone is dead and the Dragon is out of the base or also dead, the base automatically comes under your control and you get the "base captured" bonus.

If there's no mounted gun, you can use a powerful weapon (the sniper rifle with explosive bullets, for instance) to off the Dragon, or you can wait for everyone to die, which spawns friendly snacks... err... scientists that will distract it while you get the kill. Staying far away is also a good strategy - the Dragon's laser attack takes time to charge, so you can strafe out, take some shots, and strafe back before it fires.

Your sources of money are (in order of amount):

• Looting chests
• Doing side-missions
• Collecting collectibles
• Picking up money laying around
• Looting dead cyber-soldiers
• Looting dead animals

Your best way to make money is by exploring any buildings, ruins, caves and other points of interest you see on your map. Most of these have at least one collectible and/or chest and some lootable money piles. While you do so, you often get opportunities to take out some cyber-soldiers which also reward you with some cash when ripping out their hearts. Animals also give some money, but it's a lot less than soldiers, so hunting animals isn't really a viable source of income.