I finally got my garage cabinets installed; I went with hobby grade New Age Bold.
Floor is builder-concrete, and needs a good cleaning since they used it as a work area, but I covered most of the worst of it with Harbor Freight Gym interlocking 2x2 foam flooring. Not bad, pretty comfy to walk on, not sure how long it will last.
I've never had slatwall, and I haven't bought any brackets or hooks just yet, but I like it.
Still some work to do to put up brackets for the ladder etc., but it's nice to be able to put stuff away after having most of my things in an apartment or small condo for a few years.