I agree ... you'll just have to wait for the "right" buyer that is looking specifically for that setup. The other thing you have going against you is that the warranty is expired. So, you're going to be asking for a very very premium price, for a 4 year old tractor with no warranty. I wish you luck, because that's a good tractor. I would prefer that engine over my 1648 engine, for the extra hp and slightly better hydraulic flow.
my brother says im nuts to trade it....it is still in good shape and capable of doing anything i may need...he may be on to something... he is older and wiser...