Based on the movies (haven't read the books in ages):
Peter - ESTJ
Susan - ISTJ (Fe? Really? she's the quintessential PROVE IT character)
Edmund - XSFP
Lucy - INFP? Seems to have Si in there somewhere.
Reepecheep - ESTP
Eustace - ESTJ (so hilarious, I love him so much, but total Te-dom -- FACTS, YA'LL)