Hey, I am so sorry for your loss, I deeply am.
But like you said, you think it is better to release him to the Lord than to see suffer, but I believe, just as we are to reconcile with Jesus on that particular day, you will be meeting him face to face on that day.

Death, the memory of my grandma is still fresh in my mind, the way she spoke to me about her life, it's mesmerizing, Oh, how I miss her.

Issac told me, I don't think when a person die, he will straight away enter heaven.
I've been thinking about it sometime ago. From the Bible, God said that everyone will be call to be judge, including the one in the grave. Everyone will be judge on the same day, but why do pastor or anyone, when conducting a wake service, will comfort us and said, he/she is in heaven now, resting in peace.
Contradicting isn't it?
Well, for me, it is not. How could we possibly understand God's timing?  He can create so many different dimension of time. I always believe this, that the person is on Heaven now.
It gives me hope.