I pulled the head on my 92 geo metro about a year ago. Looks just like yours by the way. Pulling the exhaust, timing belt, and distributor are fairly simple. The intake can be a chore however trying to get to all the bolts. It can be done. Took me about 3 hours to get the head off. I used a breaker bar as well and removed the head bolts in the reverse order of the tightening sequence. Had a machine shop resurface the head and put all new valves in. Cost me about $250 dollars with gasket set. I definitely think its worth trying. I did not replace the rings which I wish I would have as mine uses about a quart of oil a week. I don't understand how to replace the rings an bearings without pulling the entire motor, but others on the forum say it can be done.