Update....
Dealer found a bad front wheel bearing and other lesser issues to address. The brush hog and rototiller are OK. The brush hog has a slow leak in the gear box but the dealer said to just keep if topped up every use and it will be fine. It looks at this point I am at about $1700 for his work. Seems high but I will get a breakdown. I found a back blade and six Ag tires and rims for $200 through a contact from a member here (K7LN). So with the new battery, the total at this point is just over $5500.
My hope was to come in under $6000 for this project. The tractor came with the MMM, King Kutter brush hog, JD rototiller, landscape rake, back blade (that a "friend" now says was given to him...so I let it go...found a used one anyway for $100), FEL, and a boom for the 3 pt hitch. The widow I bought it form also threw in Curtis plow for an ATV that looks like new.
I plan on selling the MMM ($750), the ATV plow ($400). I bought bolt on pallet forks ($125) and am planning on getting a Land Pride BB1254 box blade ($650), Carter EZ Hitch ($100) and carry all frame ($150). Will probably fill the tires myself ($100 with WW fluid) and make my own canopy (I have the roof of a Polaris Ranger that I hope to adapt). So just about break even on those items.
Looks like I will be well under for $6000 for a JD 855 with a lot of useful attachments and less than 1200 hours on it. For a hobby user like me that will put maybe 50 hours a year on a tractor it should be good enough. I am in my late 60's and it should last my lifetime...LOL
One of my friends has a similar tractor with a front mounted blower and he is looking for one for me. His cost $800 a couple of years ago. That would be a worth while addition as we get a lot of snow here. If I can find one, I can sell my plow truck and that would save me a bit on money and net $2000 in cash.
BTW, I had planned on getting a new Kubota SCUT when I moved north 6 years ago but could never justify the cost. It does not take long to get to almost $20k. If I had been 20 years younger it would have been easier to justify. The cost of used machines at the local dealers are nuts so I knew I had to find a private seller.
Keeping my fingers crossed at this point but it is looking good. Should get the tractor back next week. Hopefully the weather cools a bit by then.