Cherry Dresser Finishing Questions

I'm about half way through building the 6 drawere cherry dresser form plansnow.com.

Solid cherry panel in frame ends with solid cherry front & rear bottom stretchers. A plywood carcass with drawer supports is then screwed into the end panels and strechers. The cherry top then screws into the carcass.

I'm planning to finish with oil/varnish/mineral spirits to match the bed I made last year.

My questions are;

1. do I finish the inside and outside of the maple playwood carcas and draw supports or leave them unfinished? Looking at some commercial dressers I've seen unfinished wood on the inside.

Thanks for any advice

Ken