Glad you made the decision 1894House. I think you'll be satisfied.
Lennox specifies this coil as "CX34 Up Flow Full Cased (with TXV) (R-410A)." It may be able to be installed horizontally, but a Lennox dealer will have to confirm this. I know the CH33 coil is horizontal.
Why no variable-speed blower for the furnace (G61MPV)? If this is on the first floor of the house, it's a good idea. Perhaps you left a number out of the model number because looking back at your previous thread I see you mentioned the G61MPV.