As someone with an oversized 2 stage furnace, I don't recommend it. You are really getting an expensive single stage furnace. Or if it is on a single stage stat, it will constantly cycle between high, low & off.
I'd either: get a brand whose 95% is right for the house
or get this brand in the right size and give up the $150.
To me, not worth $150 to oversize, 2 stage or not.