Have you considered that the first A time is too long? I think there is a possibility that you you are missing his window and that's why it takes him so long to fall asleep. How are you putting him to sleep? Do you have a WD? Do you use Shush-pat? What is happening when you put him down in his cot? Lots of crying or he is just lying there?
It's hard for me to say anything about the afternoon A times without knowing the right A time for him and the best way to do that is to determine the first A time and then work from there.
Paualani8, I wouldn't let a baby nap more than 3h at the first months, 2.5h later on, or it can steal from night sleep.