I found SM PM to be quite a good fit for my visual-spatial, reluctant reader/writer. I did modify a little, as I read word problems aloud, and scribed a lot up through 5A/B. And I skipped many of the kindergarten-level numeral writing exercises in SM Earlybird, as fine motor skills were not at that level, at the time.
The foot-pound system really only comes up in the US/Standards editions, and even then, it's only in the units on measurement that occur in, I think, 3A/B (or thereabouts). The majority of it is metric, as that is the system in Singapore. Dollars are dollars everywhere, as far as math problems go. And I particularly appreciate the diversity of the children's faces and names of people in word problems.
