Simulation of standalone LNA IC

Hi

I am designing a standalone LNA to be packagedto be matched to 50Ohm antenna output at its input and also 50Ohm load a its output.

I believe in this case I will be using two 2-port element source with their source impedance as 50Ohm.

What if I have a load impedance with capacitive component of 1pF i.e. my load now becomes 50Ohm + 1pF, should I change source impedance of my port2 accordingly ?