Soda blasting would be the best. Having said that, I have my parts sand blasted. My justification for sandblasting is that I pre-strip the paint and my sandblaster has been in the business for 25 yrs. Sandblasting is getting hard to come by because of enviromental concerns.
If you can find a TRUSTED sandblaster, OK What can go wrong? Excessive air pressure can dent and tear up the metal. The usual green horn technique is to turn up the pressure to remove layers of paint.
Should you sandblast the parts make sure you sand the surface fairly smooth and use a 2 part primer.
As far as the engine goes. Change the oil before starting it. Use a straight 30wt oil. Measure the oil depth with the dipstick loose and not screwed in.
A drained carb bowl and new plugs would help.
Apex cycle sells a nice solo seat. Other forum members thought the exaust pipes were junk. It is a gamble sometimes.
A body shop would be expensive. The materials to restore and paint a CA95 or a CA160 is about $180.00 (putty, primer, paint, sandpaper, tack rags, mixing cups, thinner...etc) I guess you would have to be the judge to justify the difference between cost and time vs bodyshop charges
Next steps...
Welcome to the forum new CA95 owner. A light sandblast will be just fine. Anyone with half a brain can do it but I would just make sure to check out what kind of sandblasting gun and air compressor the person will be using. If it is a HUGE air compressor and industrial type gun (big one) just ask them to turn down the air a little and take it easy so they don't blow holes through the thin sheet metal. 