@skorokithakis regarding mosfet in GND: you just weaken the grounding. you put some resistance in there that will pick up noise. it might still work, very likely it will work, but for a real product, it is just not recommended. the designers of the chip did not make 5 or 6 ground pins just for fun! :) you would have to connect them all together and then funnel it through your poor FET.