Not sure I’d be able to apply the shellac without creating brush strokes and an uneven surface but will look to maybe practice on some other wood scrap first.
I am a big fan of shellac for a varnish type finish. I'm using it on my new Moreplay and StereoMour bases from a spray can. Zinsser sells it. Premixed shellac has a shelf-life of about 2 years, and when old will no longer dry hard.
It's very easy to use. I am sanding using 400 grit on an orbital sander between coats. Coats are very thin, just 1-2 spray passes. If you wanted a satin finish the 400g sanded finish is excellent. And 3-4 coats will get to complete coverage in just an hour or two. Coats can be sand in about 15 minutes in warm dry conditions (slower if cold or humid).
Shellac is actually quite durable. It's very durable against most wear and water, although can be damaged by water if left in contact for a long time, and alcohol dissolves it. It melts at about 70C (160F), which I think may account for the gumminess caused by overly vigorous sanding.
It was what was used for almost all "varnish" finishing for centuries, including floors, until lacquer and other modern finishes were invented. It's probably the easiest varnish type finish to apply. Unlike virtually all other varnishes, it can very easily be repaired simply by light sanding and recoating. The dried finish is completely nontoxic, and is in fact used on food, for example, apples are shellacked to extend shelf life.