In advance thanks for all replies, you knowledge and expertise is greatly appreciated.
I have had 3 different contractors look at my home to update the heating and cooling.
1-100,000 BTU/4 ton HP
1-70,000 BTU/3 Ton HP
1-60,000 BTU/2 Ton HP
Non of them performed a Manaul J, but I did have one performed on my own.
The 60,000 BTU/2 Ton HP came up the closest to the Manual J (1600 sqft 44,000 Heat Loss/14,000 Heat Gain)
The two that oversized stated they did so due to the amount of ductwork, the one that was closest stated it would work fine.