Hey Jack
I have been to Mita PLENTY of times, so I can fill you in.
Four Seasons is awesome. But pricey. If you can afford it, go for it, it is very secluded and very nice. Many celebs go there to get away from the crazyness of big cities.
As for fishing, you will be in great hands if you hook up with Captain Josh Temple as his fleet is located in Punta de Mita. He runs a sweet 40ft Cabo but if you are looking for something cheaper he has some nice 30ft gradys with excellent captains, i suggest Lora.
To say the area isn't fished as much though is a dream. Plenty of people fishing the area, and from there the ride out to the tuna grounds is shorter, but still, everyone goes to the same spots usually, the rock or el banco. Around mita you can get a panga and do some nice roosterfish and dorado fishing for rather cheap. Again contact Josh or his wife at
info@primetimeadv.com
I think Four Seasons has a van to pick you up from the airport, so go with it if you can, not sure if it costs more or not, but well worth it.
Mita is a small town and definitely not fancy by any means, but there are some nice restaurants along the beach. Not much nightlife though, its mostly a relaxing vacation if you go there.
PM me if you need more info.
G