ARGH WHY?!?

[Ivan141]

Exactly! I think you scare to easily from the rust problems. For 20 year old cars most hachi's I know are fairly well built..there are some rustbuckets out there but the regularly driven and maintained ones never have more than a few holes.
I was scared by the rustholes in my car to in the beginning, I choose to bite the bullet and have them repaired, after that rust mainly becomes a containment issue.
I'm not out of the rusty woods yet, but I'm confident I'll get there. From what I have seen of your car it is in fairly good condition..
Take a look at some of the restoration projects around on the forum, some guys have welded half the car and they probably havent spent as much as you estimate your repairs to be. The most important thing is that the rust does not extend to the frame of the car, or in lots of unusual places.