I would recommend at least a 12 gauge pump shotgun and a centerfire handgun of some sort. If possible I would also include a semi-auto carbine of .223 caliber. My own choices are the Rem 870, AR-15 and Glock 17 (Back in the States).
I personally view being unarmed as akin to being voluntarily castrated. I won't even debate the subject with anti-gun people. Being unarmed is just silly.
Here in my neighborhood (Brazil) we have one murder a week. Fortunately I was able to legally purchase and register two very expensive .38 special revolvers. It took me nine months to work through the paperwork. During that time I was offered many different guns including a sub-machinegun.
If Brazil ever bans the private ownership of handguns the only thing that will change will be my handgun. I'll go out the same day and buy a 9mm, .40 S&W, or .45 acp. for half the price of my legal .38 special. Mac