Some nice cars in your list - We had an A33 in the family and used to be a very comfy car so I expect the same from the newer generation . I'd avoid the premio since they're quite old at this point and likely to have been abused BUT there are some prime specimens out there but it's really difficult to find a well maintained genuine model. I'm a bit biased so take my recommendation regarding the Fd1-FD4 with a pinch of salt - those are really nice cars to drive. All things considered since it's a first car I would recommend the 141 since it's an honest hard working car that would just run... you could spend a little time and find a b/new imported one that has been well maintained and get it. IT's a bland car, and it doens't have too many fancy bells and whistles but will get you from A-B without any hassles.
So to sum up - 141 > Civic > The nissans>Premio
To get it checked take it to the joint in Nugegoda - they're fairly ok if it's a Toyota even Toyota L#nka do a checkup it costs 7000 if i remember correctly.