High current in Coil/Inductor
First, a quick search in digikey gave me multiple results for a 47uH inductor with a 12A minimum current rating. Try going to component sites and using the parameter search tools. There are some out there that meet your requirements.

Secondly, as for putting inductors in parallel and series, you can calculate the overall inductance the same as you would with resistors, so in series, you add them together (L1+L2+L3...... etc) and in parallel, once again, same as resistors (1/L1+1/L2+1/L3......) and you will also be able to calculate the current through each via the same method as resistors.

Thirdly, as brhans mentioned in his comment, the capacitor printed codes are in pF, with the 3rd number being the multiplier so 10 = 10 and 5 = x10^5, thus 105 = 10x10^5pF = 1uF

Further reading: Simple series and parallel inductors