For this much travelling, the only recommendation is a 100cc bike. Go for Pridor due to its comfort and durability.
However, if you must opt for a 70 cc motorbike, buy a Honda CD 70 if you can buy it. You do not have to compromise on quality when you can buy Honda. You do not have worry about its maintenance. Just keep oil and filter changed at proper and reqular intervals. That's it. You don't even need to spend money on your bike's tuning if you do these two things right.
You should visit a 5S Honda showroom and have test drive of both, 70 and Pridor. You'll feel the difference for yourself. I have kept Honda CD 100 from 2010 to 2013 (sold it out a couple of months ago) and it never disappointed me. I was also thinking of buying a Honda 70, but one day I drove my friend's Honda CD 100 and changed my mind. Alhamdu Lillah, I have had satsifed 3 years with that machine.
Another option for you in the 100 cc category is Sprinter Eco/Raider. But they come with a different carburettor technology and the additional liability of changing its oil filter alongside its engine oil and air-filter cleaning. Plus, due to different technology, you do not find Suzuki mechanics easily. So, Suzuki is not recommended for you as you are a lazy person like me 
Good luck!
