Would any of this 2 setups work? like, the data wire probably needs a certain amount of mA to work and transmit data to the components, but making a bifurcation on a wire the current is divided by 2 if I'm not wrong, logic tells me that it sould work, but... I am nothing close to expert... 
thanks everyone~
You need at least 7V on the VIN pin, don't see why servos wouldn't work like that.
EDIT: You COULD insert a AAA batt in the wire to VIN, - end toward the 6V, + end toward VIN, result, 7.5V to VIN.
Signal pins can drive a larger fanout than 1 normally! Start to worry if you want to drive 10 loads,
not 2. ATmega-based Arduino's have pretty strong logic outputs (abs max 40mA).
Its not clear from your diagram but you seem to be routing a logic signal without its own ground
wire - try not to do this, all logic signals should run physically alongside a ground wire.