Tania, thanks for the tip. I always way over-seed directly in the garden and sort of do a 'cut and come again thing" but knew I should figure out the easiest way to do transplants and let them grow big.
One more thing, you're right -those lettuces look just like the organic baby leaf lettuce sold in the stores for lots of $$ so you could eat them right now . I have been meaning to stagger plant a bunch of small containers like that and harvest them when small--you have inspired me to do that too.
Best wishes, farkee (MCP)