I am building a circuit based on an ATmega328P. In the schematic of the datasheet are 3 capacitors (1uF, 4.7uF polarized, 1uF) in parallel on the power supply Vcc. I assume these are for decoupling purpose.

I currently only have 470nF ceramic film capacitors (805) and tantalum capacitors (805). Is it possible to connect 2x470nF in parallel to achieve the ~1uF on the respective lines? In theory the capacitance is 940nF, but since it is used for decoupling it might be bad for the signal, because I solder two parts instead of one (more solder, cables, cable length, more resistance, ...).

Does this matter in a practical situation?

EDIT: I build the circuit on a hole grid breadboard