The Fuji wifi apps are not well implemented, cumbersome to connect camera to iDevice, drop connections, and recently I can't get my X-E2 to connect at all to my iPad despite being pretty technically savvy. Also, transfer is slow and drains battery fast. I would not rely on the Fuji apps.
Unfortunately Apple still does not provide an option to limit camera connector imports to jpeg only, so imports (I assume you are shooting raw+JPEG) with camera connector are slow as you have pointed out, and eat up iDevice memory. I periodically look for 3rd party app jpeg only import solutions but have not yet found one. It might be worth it to you to get an Android tablet that can read the camera SD card directly via card reader (if those work on Android). If you are shooting JPEG only, I think camera connector is your best option for the iPad.
Another option for review might be a small HDMI monitor connected to the camera using camera playback - at the cost of more gear and expense.