Thinking outloud, after just spending more than I would like to on suitcase weights, that's something I wish I had rolled in to the 0% loan. I plan to buy the same amount (2-42s, 2-70's) again after the bank recovers, but if it had been rolled in to the loan I'd have 8-70s and 4-42s. Another positive is there's usually further discounts on attachments saving some more money when bought with the tractor. Adding an extra ~16.67/mo (5yr @ 0%) for 728lbs of flexible ballast is totally worth it. Further thinking outloud- paying for suitcase weight ballast outright is painful, considering how expensive it is for what it is. When rolled in to a 0% loan is so much more palatable cause you don't see the line items for every payment.
In my opinion you would do well to acquire a PTO driven fertilizer spreader. After my initial tractor-owning year and paying to have fertilizer, lime, and fire ant bait spread, I bought both an imatch hitch compatible Frontier PTO driven fertilizer spreader and a Herd GT-77 seeder for spreading winter ryegrass seed and fire ant bait. I saved enough money doing these services myself to reach the break-even point financially after the first year of ownership of the spreader and the seeder.
You mentioned your 1025R and need for a post hole digger. There is an ongoing thread about this right now. The 1025R has a category-1- limited three point hitch which will restrict the length of auger it can use, and you will find that the holes may not be deep enough for your fence posts. If you are young, strong, and motivated enough you can dig 3/4 of a hole, and then finish the last 1/4 by hand.
Other things to think aboout acquiring are a core aerator, a pinestraw rake, a chain harrow, a set of pallet forks, a single point hydraulic connector, and a canopy for all those sunny summer days coming up soon,
It's been a pleasure to help you spend your money.
If the table is wide open then get ALL of the implements. One of everything.
My vote for spending your money:
Pallet forks. Tooth bar for loader bucket. Grapple for loader bucket. Ballast for rear of tractor.