Welcome to TBN, John. Good folk's here with alot of tractor experience and very willing to share it! I used to live in Bareflanks. Almost 4 years up there. Decided I needed to work on my tan; so, I moved down to the Kenai Peninsula!
Four acres is a good sized work area - should be fun.
I finally went to a cab tractor a couple of years ago. Not the slightest regret there, either. I really appreciate the Hydro transmission tractors as well. For close in work (snow clearing) around buildings and landscaping the Hydro transmission is pretty hard to beat.
I don't have a good idea regarding your long-term plans for your tractor. Commercial work - snow plowing, small landscaping jobs, etc. So, it's hard to say if you might be better served with a 4000 series machine or a 3000 series machine (Kubota, Deere are very similar along that series). But, if you're planning to scale your chores around just your 4-acre property; I'd be more inclined to go with a cabbed, 3000 sized machine with eHydro transmission.
You'll find that both the Kubota and the Deere machines are a significant investment when you're looking at machines with those options. But, after working different tractors the last 10 years up here.. that investment will pay major dividends for your comfort and enjoyment as well as recovering your money down the road should you decide to sell.
Best of luck.
AKfish