There is many considerations for you...
First off... I do not promote the use of chinese knockoffs for anything but a toy.
Mossberg has the safety located atop the frame... remington has a crossbolt safety. Both are very proven and qualified for HD...
Price goes up fast with Benelli, Beretta etc... I suggest a pump for your first HD shotgun.
As for hiding it... I have home made gun rack hooks made of 1X6 pine on my closet wall. I also set a gun against the inside of closet so I can reach in and grab it.
I don't always have it hid either... There are times it/they may be beside the bed.
There is also a nice little gem...
http://www.the-backup.com/
Bed side rack hidden by made bed blanket/spread
Brent