First question - what does that rim weigh? If it's a 550+ gm rim, you use the proper washers and a bigger one at that spoke hole I doubt the spoke holes are going to be the reason the rim dies. If it's a 450 gm rim, a properly built wheels washered as above should go a good distance but I'd be careful.

That looks like one of Weinmann's nicer and lighter rims. If I'm right, I'd build this up for weekend riding but not for touring or 10,000 mile years.

Now the other question - is this happening on your last dollar or valuable vacation time or are you retired, want to benefit a friend who is a good builder or otherwise can afford to lose a wheel for a couple of weeks to a re-build? Tight money and gotta have a wheel that lasts, pass on it. Got the money or the time, this could be a nice, good looking wheel that might just roll on forever. Now if this is to be a workhorse year 'round all-weather commuter rim where I live, ridden by someone like me, build it up and ride it. Brake wear with our PNW wet and grit are going to kill it in two years anyway. The spoke issues won't even have a chance to shorten its life. (Or don't if it has sentimental value.)