I would assume the 80hp tractor has no FEL?
I went with two machines, I bought a used lawn mower/ garden tractor and a tractor large enough to move a round bale.
I think the prob you will have is high hours means lots of maintenance, if downtime is no big deal I would say buy two machines, if you don't feel like working on stuff all the time I would buy one of whatever you need more.
I paid $800 for my Husqvarna 54in mower with 230 hours. It's not the greatest thing in the world but does a good job cutting grass, I personally don't like zero turns but that's just me.
Lawn mowers are cheap, there's 10 for every 1 tractor out there. I would vote separate machines, to do rather cheap on the lawn mower and take your time to find a good tractor.
If the grass gets cut, hay gets moved (bobcat) life's good, I would be patient on the tractor purchase.
What are you moving? Round, large/small square or loose hay?