I responded in your other thread, so I'm cutting and pasting.

I'd either build up the International or since you like to spend $150 on bikes, I'd look for some mid to late 80's rigid MTB's. Those have all the parts you want (triples, long chainstays, cantis, fender/rack attachment points, etc.) and if something breaks down the parts are easily found. Around here, $150 buys a lot of vintage MTB.