I agree: get them into their final, big pots ASAP.
I often look at Johnnys Seeds and Territorial Seeds for professional growing advice: they suggest germinating pepper seeds in a 20-row seedling flat ... can you see this if you open it and then zoom in?
"In about 2 weeks [after sowing indoors], when the first true leaves begin to form,
carefully separate the seedlings and transplant them into cell trays or pots."
http://www.johnnyseeds.com/t-g...
This NGA site now has a "Learning Library" with an area for Plant Care Guides. Here's the Pepper article, somewhat introductory:
http://garden.org/learn/articl...
