Strobe lights on is a good practice but only when crossing the runway. Not "sometimes we are 200m/300m from the threshold/crossing point".
Putting your transponder on on the ground is of no use to traffic landing or taking of from the runway you are crossing. TCAS is not directional so it can show you on another airplanes TCAS receiver on the other side of the airport or even outside the airport. Some airports require you to put your Transponder only on to see you on their Ground radar but they do not ask you to put your TCAS on.