Actual sandblasting is generally way too harsh for anything other than frames and swingarms. (kind of too harsh for them too!) If you have enough compressed air for a soda blaster, I'd like to recommend getting a glass beading cabinet. A bit of money, but vastly more useful, and you can use all sorts of different media without making a mess. So worth it, you'll wonder how you got along without one. Also, probably better for your one handedness. (I lost all use of my right hand/arm 6 months ago (can mostly pick up a cup of coffee now, so getting better) so I have some understanding) Also don't dismiss the value of wire wheels. Stainless steel or brass, mounted in hand drill ( or hand drill in a vise), drill press, or bench grinder, they can create a variety of excellent results for fairly cheap. Takes some experimentation to learn what finishes can be expected. Scotch brite wheels, especially mounted on a bench grinder, are great too. Indispensable in my shop.
Trial assembly. It's a good habit to get used to. Most people's experience is repairing things, so repeatedly assembling anything is a real drag. Any fabricator, on the other hand, commonly assembles things maybe a dozen(s!) times getting things right, so trial fitting things one time to just check is nothing. And, it's a lot less trouble than it sounds. In the main, getting any part cleaned and prepped for final finish is 90% of the job, so trial assembly is very little extra trouble. Also, assembling and disassembling an entire motorcycle without any oil, grease, thread lockers or concern for proper torque is super easy and discounting the time fiddling with parts to get perfect fit or assembly sequence (time you totally get back under actual final assembly) is quite fast. Plus, you get practice, which makes it much, much easier to assemble awkward parts without scratching them, and improves your chances of noticing anything wrong or out of place. Personally, I find final assembly a great pleasure. All brand new (like) perfect shiny parts, nothing to fix, tightening every bolt for the very last time, the certainty of a brand new perfect motorcycle at the end. Happy days!