What flash do you use in co-op with that? I'm switching from Nikon to Fuji and for Nikon I always used my SB-910 on TTL-BL or 1/32-64ish in M but I'm a bit lost in Fuji-land haha.
With 32gb only costing around €25,00 I would rather have 100% JPG than let's say 90-95% quality. For best results use RAW but if you need JPG I'd rather have the option to select the highest-quality considering the costs of the SD-cards.
As long as the AF- can focus easily and the sensor can keep up at higher ISOs needed it's fine for action shots. For isolation purposes a f4 lens would be better...