Hello, I am in my seventies

and am not that experienced with coin photography. I have done some research and it looks like the following features would be very helpful
I am looking to buy a PS camera for coin photography.Preferably for $300 or less. I have purchased the USB camera featured in the "I just got my USB camera!"topic. I am waiting for the stand mentioned in the topic to be delivered.
I am interested in buying a camera that has the following features:
a) Capable of recharging without battery removal.
b) A remote switch for snapping pictures.Does this exist for PS cameras?
c) Capable of viewing the image on my computer before snapping.Does this exist for PS cameras?
d) Macro settings
e) Wide angle This would be the least important.
Any and all suggestions will be appreciated.