Dude, that sucks so much! I would be inclined to think that XR200R spokes (for the 18" rear years - '81-'81) would do.
You've been around here long enough to know how many of us appreciate trucks, tractors, lawn mowers, go-karts... Can't you bench-bleed the master and then use a cheap HF vacuum bleeder to do the rest? That's what I used on my '99. I even drank a cold beer while doing it.
Your first pic made me laugh out loud.
