I have decided on the JD 4105 with loader and backhoe.  I like the dealership and JD gives you a discounted price regardless if you take the free financing.  
To address some of the appreciated advice I received in the post - The reason I do not want to step up to the 4120 for all the "nice features" is cost (5k), but mainly I do not want the eHydro.  This means electric Hydro I guess.  These are subject to tearing out unprotected wires and sensor if your in the woods with the tractor (I have been told).  I often drive over mountain laurel and branches so this may be a problem.  The 4105 is controlled with levers to the Hydro and not wires, I was told a non-issue.  My backhoe work will be intermediate at best.  I have 20 acres that I harvest firewood, make road, food plots etc.  I also will be mowing a 3-4 acre field as well.  
I originally wanted a gear tractor for cost and simplicity.  For $700 you go from the 4005 to the 4105.  This gives you a 300 pound more loader lift and a 200 more pound hitch lift, plus the Hydro.  This is worth it to me.  From all I read the 4105 is a simple bare bones tractor, perfect.  I use it for my small farm, not as a living.  It will be real "fancy" compared to my old Ford 1710 I'm sure.
The cost with the 72" heavy duty bucket, r4'S, ballast box, and the 375 backhoe is around $32,000 (plus tax).  I'll take the financing and get a mower and extended warranty as well.  I think that is a decent price, about 12% lower then MSRP on-line.
I am going to think about it for another day.
PLEASE, Any more input would be appreciated........