Truly it’s according to how good your Chocobo is, and if you make your own set of points. If you have a rank 9 maxed out Chocobo you could probably farm some decent MGP. Less than that and you’d be much better off just doing the tree chopping or mining.
I personally only use it if I’m in the room. Fishing while reading a book or watching tv, etc. So far I’ve never had any problems with it or even had anyone say anything to me.
Even something simple like onCondition(nnnnnnnn,chapternumber). So you could do something like onCondition(Umbral Flare,5) and it would execute chapter 5 at this point.
If others aren’t interested, I understand. I’m a big fan of what you have planned. Just Triple Triad is one of my personal desires. Drop rates are so numbingly low it would be nice to farm some of the rare cards.