personally, i think 10weeks is way to young. Esp as you are b/f. I know some peoples put their kids into daycare at 6weeks, but, for me, no way.
DH has suggested a day of 4wheel motorbike riding, which we was meant to do before i got preg, which i would love, and doing it a xmas time. Bubs will be 6months old about, and even with that, i am thinking i am not so sure i want to leave him/her with someone else for such a long time. Would be like at least 5hours.