OK, remember it is an OLDER bike, things will go wrong with it just due to age, rubber doesn't last that long, especially if sitting, and with only 14,000 on a 27 year old bike, it has been sitting at one time or another, which is why the carbs need to be worked on. You also need to look at the forkseals, fuel tubes and anything else made of rubber. For the age you will also have to be prepared for things you can't see that will pop up that will need to be repaired.
Viragos are good bikes, balanced and easy to ride, nice looking too. But you will need to maintain it due to age.
I have a 1986 Yamaha and love the thing, so I don't care how much it takes to keep it going, but things do happen with these older bikes, mine sprang a leak from the fuel tank last year, a bulb went out for the low fuel light which caused a problem with the reserve/on fuel switch and I needed forkseals last year.
If you really want the bike, know what you are getting into, keep money saved for repairs, but if you really like it, you will love it when you ride it and so the extra costs will hurt, but the enjoyment will make up for it.