I LOVE our city's yard waste: all food waste (including meat and bones) AND food 'ruined/ aka can't be recycled' paper (paper plates, paper towels, napkins, Kleenex, pizza boxes, Chinese delivery, etc.)... In addition to standard yard waste. The City makes a KILLING on selling the resulting compost. So it may be something you can get some groups lobbying on.
But back to self composting (haven't since moving here)... 1 word
Worms.
Worm balls and some pre existing compost to be turning the new stuff into gets things going FAST. Do make sure it's kept moist (not a problem up here), and that it's turned regularly, and you're good to go.
Also keep it away from the house. Rats and mice love food waste... And in CA that means snakes follow the rats and mice. None of the above do you Want near your house/kids.
Which is a thing to consider.
ALSO that if it's plastic (or wood) it will get chewed through. We never had a tumbler, just a pit with scrap wood sides. Some friends used wine barrels on 2x4 'tracks' to roll them on. Eventually the wood breaks down, then just got some more.