raemin Could you also provide us with the required tools, drivers and whatever accessories one is likely to need in order to flash dRonin on these targets?
There's nothing special about these boards as far as the tools required. Zadig is the old standby for installing the DFU drivers required by most FCs supported by dRonin. ImpulseRC Driver Fixer is supposed to do the same in a friendlier way.
To keep this on topic, here's another deal on a dRonin capable Eachine F4 Brushed Flight Controler : an extra 8% off using coupon RCBrush brings it down to $13.42
Having built a 90mm X based on this F4 Brushed FC I would recommend powering the cam/vtx combo from the 3.3v pads intended for the DSM receiver. The benefits are filtered power to the cam/vtx and makes the build 2S safe provided the motors are capable. Most AIO cam/vtx combos intended for micros can be powered with only 3.3v which makes this tip practical.