okay marty, this is why it is good to have more than one hive so that we can learn and compare each of the hives, not all hives are equal, not all queens are equal. what you need to do is get in there and see what that queen is doing? are there eggs, larvae and brood in all stages, and a good pattern? is she laying well? is there a pest problem?
i don't typically split a first year hive, not saying you can't, but what is the purpose of the split? if you have a problem queen, this is easily remedied to just requeen the hive, or if the hive is queenless, a divide on this hive will not help you in either circumstance. i also like to get my bees built up in two deeps nice and strong going into my winter months so that the following spring when they are busting at the seams i can divide that hive and make an increase on my bees. if i do a lighter divide, i might get the donator hive to give me some honey as well.
i think first, after i read your reply, get in there and see what's going on before you decide to split the hive. hope i made sense?
also, great decision to feed if you have foundation to be drawn, and the queen excluder left off. but i really think you need to see what's going on with her. when you do, post back and let us know!