Sorry to come into this one late. Looks pretty darn good to me.
If you want to do the wind-up, just do it--who cares what anyone else thinks? But just be prepared for some dingaling to mess with it. The "no touching" signs on the tables amount to squat, IMHO. Some jerks think they're in a petting zoo, not a model exhibit.
I hope you're having good results with the Liquitex. I've never used them for modeling, but I have extensive experience using acrylics in fine art/illustration. Liquitex is one of the brands I've usually avoided because the paints have a considerably lower amount of pigment compared to other artist's acrylics. I've had good luck with their gloss medium, though. I have limited experience with the texturing pastes. I bought a can of the grainy stuff a long time ago, and had a hard time getting it to stay stuck to anything.
You can have a lot of fun with their "interference" colors.
For this project, I think the Liquitex will be perfect, especially for your bread, because I think you'll really have to slather it on to cover that foam.

Another great tool for building up textures is paintable acrylic caulking. I've used that to make water/ocean a couple times. Cheap as dirt, easy to clean up and easy to work with. You work it as it sets up, and it's very forgiving.