Have the dr's found any issues with your veins?
I was in a similar situation to you, I was not considered bad (although I do have some definite MS symptoms , see my tracking thread)
I think if there is a problem to fix than fix it, go with the balloon first which is a pretty simple procedure.
I believe it is better to act before the damage is done.
The procedure is minor and painless.
If its a financial issue then start saving. You may have to wait a while now anyway so its worth putting yourself on the list.