The steering bearings may just need cleaning and regreasing. If there's some "slop" that's usually all, if there's a notchiness on centre that means the bearing race(s) are worn out and need replacement, usually installing a tapered bearing kit is the best answer - these bearings are much better than the original bicycle style ball bearings. But those bearings are actually fine and work great if not abused...
It's really just a lot of time to remove all the stuff on the steering head and then checking, cleaning, greasing, and reassembling the bike to fix stock bearings. I would guess 2 to 4 hours but I don't know what the "book" says. Shops have these books that indicate the time to do a job, they usually will either charge "book time" (and then if they take longer that's tough for them but if they do it faster that's toght for you) or "straight time" which is on the time clock. With older bikes the straight time is usually your only choice because the mechanic probably has never seen the bike before and has to figure everything out. It's not a huge job to do yourself with a shop manual and simple tools. Take a lot of pictures of the front end showing where wires and cables go, this is critical to get right on reassembly and is not at all easy to guess at. Just be careful when you drop the steering stem, it's easy to lose some of the balls when they drop out. The actual ball count is a bit funny, the top and bottom have different numbers of balls. Reassembly is easy as you just glop grease in the races and set the balls into the grease, they stay in place while you put the stem and top race on. Tighten the nut fairly tight and turn the steering, loosening it until the rotation has just a bit of bearing friction. Check again after the top bridge is on before you install all the attached parts.
The rear bushings are a bugger no matter how experienced you are. The old fibre bushings will be a right ba$tard to get out, the collar they wear against will be worn out of round so that the new bushings can't fit very well. Fibre bushings are near impossible to drive in without breaking. Bronze bushings are good but my experience is that the ones available aftermarket are a sloppy fit, often worse for side play that before changing them. New bushings from Honda are reported to be steel... I don't know how steel-on-steel bearings is a good idea. Hondaman had a service rejuvenating swingarm bushings where you sent him the swingarm and collar... that would be best I think if he still does it.
