If I was aiming to share implements with guys who have JD 2 series and Kubota B series, I might have looked at a machine in that size range, even if it meant I needed to buy second hand. I'm assuming there's not an option to ask the dealer to swap for a B series (either because the dealer won't, or because you can't afford it?)
You have it now, so work with it. If it lifts it it'll move it, lifting things won't break it, it'll just run out of lift. The hydraulics are identical to the BX2380, so it'll lift the same - that's driven by pump pressure not by HP. So swapping to a BX2380 won't help other than maybe for the tiller.
You might have to go slower when driving implements that use PTO HP, so a tiller might just need a slower attack on your ground, you might have to do two passes one at a shallow depth, or do the second row a little overlapping the previous row so that it's not working so hard.
Box blades and the like your problem will be traction. Again the BX 3ph will either lift it or it won't. If it doesn't lift it you can't use it, if it lifts it then you won't break the tractor lifting it. But when it comes to pulling it, you may find you don't have enough weight/traction to drag what you want to drag. Again you can work around this by taking smaller bites.
Be aware that you're asking a lot of a small machine, and don't abuse it. So don't go rocking things back and forward, or slamming into stuff to get it to move, that's when you break things. If you're applying steady power then things shouldn't break, they should just fail to work. It should spin the wheels or stall the engine long before the breaking point of any component - again unless you're shock loading it somehow.
Bottom line, try to do all the things you want to do. If it does them then it'll be fine, you're unlikely to break it doing tasks like you've outlined. But if there are things you can't do that you want to do, then swap the tractor before you've had it too long - the dealer can still sell it as new or near new if you've not put hours on it, but if you wait too long the cost to change will be substantial.
