When looking GPU that does not need more space than the mITX motherboard, have you seen better option? For 500$-600€ it seems to be the holy grail.
Model: GV-N2070IX-8GC
https://www.gigabyte.com/Graphics-Card/GV-N2070IX-8GC
Model: GV-N2070IX-8GC
https://www.gigabyte.com/Graphics-Card/GV-N2070IX-8GC