aged 3-16? you want a baseball coach or t-ball coach? 3 years is too small for t-ball even.
It sounds fun, if the ages were a little more tighter grouped. It’d be too much like baby sitting than actually coaching baseball if it is as it sounds – a disarray of kids randomly squashed together and told to play baseball with the foreign ‘coach’.
If it’s organized well, I think coaching baseball would be *great fun*.