that board would be ok, though i hate how few usb ports it has..
yes, you can use a usb hub, but some are finicky about hibernate/standby. because of this, i recommend you plug any critical devices into a usb port on the mainboard, not a hub(like the touch screen) in most cases, i recommend a powered hub over a non-powered hub to make sure that all the devices plugged in have enough power.
to my knowledge, there are not any cases that will fit the dsatx + motherboard. and there are zero car-specific cases that fit a micro-atx board. all the cases are designed for mini-itx boards with small power supplies like the m1, m2, or m3 units.
otherwise, the parts look good!