I do like the greenhouse and bistro items, but if I had to choose between the three you listed, I’d pick Grandpa’s Grove. The tractor is fun for hay rides and is useful for when you have a huge garden, and it includes the orange trees.
The mention of the Bohemian Garden set is a good one too because it has so many new harvestables. Not only are they useful in nectar-making, but they are a perfect complement to your new bakery set with all the pies you can make with the baker’s station.
However, IDK if you have the Brunch at the Old Mill set? If not, that would be my preferred pick, because of the canning station. The tea set is also nice, you can fish in the water wheel, and the set also comes with cucumbers and corn.
The canning station is even better (with more options, recipes and fixes) if you use the Canning Station Overhaul mod from MTS. http://modthesims.info/d/580462/canning-station-overhaul-update-aug-2-2016.html
One of my Sim’s canning collections:
