I'm going with Body (Str+Con), Grace (Dex), Mind (Int) and Soul (Wis + Cha) for my 5E lite game. Also going to ditch the scores and just use the bonuses. Since it's for kids I don't have to justify anything, but for myself the split between Str and Con doesn't make much sense in D&D or the real world (except for a few outliers). And stats are only really important at low levels. Midlevels plus gear means stats matter less later in the game--other than surviving to get there.