The board has a little fan on it, wich for the most part will be fine. I found that an old 486 Heat sink and fan fits the 68k quite well.
You can use any 72pin simms if you can still find them :-/
I would not recomend that you run this in a dektop A1200, I did, and mine melted (though I have an 040 which is much hotter than the 060). Try to tower your A1200 system.