Hay guys, do short smokes like these need to be put in a humidor?

http://www.tinderbox.com/Padron-Corticos-Tin-Cigars?sc=2&category=5293

And do you need a cutter for them?
How many are in an avarage pack?

I am a new cigar smoker and am looking at this humidor http://www.famous-smoke.com/cigars/search/humstats.cfm/inum/16083 and i notice that it does not come with a hygrometer. does it really need it? and also how long will my cigars last in this box? and also is this a good one for the price? please help me if you can.

I don’t smoke so I’m only going to be having one once every blue moon. So, do I need to keep them in a humidor with the rest of my cigars, or are they fine on their own for a couple months?