what an exciting decision- congrats! i would love to be a stay at home dad!
if it's anything like having a stay at home mom, the other caregiver usually doesn't get as much attention. it may not be exactly like that in all situations of course, but i know my son prefers my wife (who stays at home with him). whenever he is feeling clingy, he only wants her. i of course still have my time with him which i really enjoy. i try to be around him more whenever i can. for example, i'm working from home today and he was quite cranky only wanting his mom- then after a couple hours, he warmed up with me again. it does seem like it takes longer for my son to get used to me again. i know that's just my situation but i've heard others being in the same boat.
i think it's good to be prepared for not the best situation- it does hurt when my son ignores me and prefers my wife- i know that's part of the deal though
good luck with everything- that's very exciting!
eric