Looks like a good start. ..
I've had 5 bins for a couple years. Started with a 1000 or 500 worm bag, easily 1000+ in each bin now. One bin has dried out a bit this winter. Never bothered nesting bins together or making drain holes, guess I've gotten lucky.
Filled mine with clean junk mail, brown paper bags and brown cardboard that's been through my cross cut shredder. Watered until damp bit not wringing wet... worked like a charm.