SummerRain
I dreamed that God would be forgiving.
I understand wanting to help out older cats, but adopting kittens is still a brilliant thing. You're still giving two kittens without a home, a happy safe home. Don't get lost in thinking about how good a thing it would be to adopt an older cat, and forget that adopting a kitten is still a great thing to do.
I don't know what I would do, but I think you should do whatever you most want to do - not what you think is the most self-less thing to do. Because both options you are doing a great thing, and both options will probably eventually work out (there are lots of cats our there, you should be able to find an older cat who will fit in with your cats and home, and lots of people wanting to adopt kittens... and of course keeping the kittens you know it'll work out since they're already in your home, so neither is a situation that is unlikely to work out well)... so I think it just comes down to what is best for you.
I don't know what I would do, but I think you should do whatever you most want to do - not what you think is the most self-less thing to do. Because both options you are doing a great thing, and both options will probably eventually work out (there are lots of cats our there, you should be able to find an older cat who will fit in with your cats and home, and lots of people wanting to adopt kittens... and of course keeping the kittens you know it'll work out since they're already in your home, so neither is a situation that is unlikely to work out well)... so I think it just comes down to what is best for you.