Talking about height for cutting. Have you tried your kitchen work surfaces , they are usually just right or breakfast bars. I have raised my kitchen table on those risers making it same height as a breakfast bar and use a stool to sit at.
Those cabinets look beautiful l plus. I have a horn. Make sure you have the bit at left for quilt to rest on. Mine is a pull out separate unit which fits in the cupboard anda set of draws on wheels which have been in many different configurations . This is just a thought, could the cabinet be raised to make a suitable height for cuTting on and in that picture is a raised area for the foot pedal so a raised area in there. You chair would have to be on a lift system.