Regarding the time units, keep in mind that we don't need to use the RPGA TU System. As I said in my first post, I was thinking more of the following:
You gain 336 time units (keeping in mind the shorter year). If you do something time-consuming out of adventuring (crafting, researching spells, ...), reduce your TUs by that amount. If you leave an adventure, do the same. You cannot do something if it would put you below 0 TUs, except adventuring (the negative amount would be deducted from your renewed TUs). When TUs are renewed, the unused TUs are lost/lost except for a fraction (if some actions might need more than 1 year to complete).