[NotMyWay]

You can always have multiple characters, and transfer items between them. I prefer potion and scroll production, because when you are upgrading, you will need to be in a town which has a bank/smith anyway, whereas for potion and scroll production, you can create them if you happen to find the materials while training and thus prolong the amount of time spent training. but, like jacquin said, stone production is a must have, so you may want to consider that if you dont like scroll production or another character who can produce scrolls...

The bad thing about scroll production however, is the scarcity of the materials required for the initial scrolls. also, when you get to be able to mass produce them, and each scroll lasts 1 hour, i doubt it really matters if u choose scroll production on ur main character..