You can change the assumptions and decide what is most comfortable.
The simplest way to start. Decide how much you want to invest and your preferred risk profile. SquirrelSave will do the rest.
Few people think about retirement savings. But the sooner you prepare for it, the more likely you will be able to retire early.
Education is a wonderful gift for any child. Why not start early? After all, it may be quite many years more before you need to use the money.