Personally speaking, I like to finish and bottle every batch, or at most every two batches. Otherwise all your syrup is going to be a blend. Which may be fine with you, but I like the variety I get from different batches. Even if you don't want to bottle each batch, I still don't see the point of finishing each batch unless you're going to bottle it. When you get it exactly to syrup, bottle it then, rather than having to deal with storing it and reheating it.
Particularly since you seem to be very reliant on the weather for a lot of your storage. That's an iffy proposition, as Mother Nature always has her own plans, and they don't always line up with ours!
Good luck!
GO
2016: Homemade arch from old wood stove; 2 steam tray pans; 6 taps; 1.1 gal
2017: Same setup. 15 taps; 4.5 gal
2018: Same setup. Limited time. 12 taps and short season; 2.2 gal
2019: Very limited time. 7 taps and a short season; 1.8 gals
2020: New Mason 2x3 XL halfway through season; 9 taps 2 gals
2021: Same 2x3, 18 taps, 4.5 gals
2022: 23 taps, 5.9 gals
2023: 23 taps. Added AUF, 13.2 gals
2024: 17 taps, 5.3 gals
All on buckets