Thanks Brent for the smart ass comment!!
I ended up with a 1 1/2" VDO white faced gauge up to 100psi for $50.
I'm not sure if there's a "best" method per se. I'm running my extra oil lines off the oil pump pressure switch outlet. Hopefully this works ok.
From there I will have two T's. One for the gauge and the other to split the line for each side of the head as Brent has done in the past on his motor.