Generally, all alts handle their own finance and enhancements, but share the same salvages bank. So far, no farm, probably keeping to that.
I have some costume-rules...
I have one that has five outfits, will only switch to the right when she's passed level 10, 20, 30, 40, 50. (Slot 1 = robotics, progressively more human)
I have one that switch to the right costume when she levels up, and switch to the left when she's defeated. (Slot 1 = human, progressively more monstrous, up to 6)
I have another one switch to the right when defeated, reset to the first when levels up, but limited to 4, because she has social outfits.
And I plan to have another, this time 6 costumes, hardcore mode, once she's out of outfits, she dies for good. (Thinking of starting with a tank, with each progressive less armoured...)