Elizabethann, I'm so sorry that you lost both of your beloved kitties in such a short time.
I can understand the emptiness you feel without a kitty in the house.
I think there is no harm in looking, sooner or later the right kitty will come along needing you as much as you need him.
I think you will know when it is the right kitty and the right time.
Sending hugs your way.