Determining rear ballast weight ?

[Farm Fun]

Been trying to determine how much ballast I want to add to the rear of the L3902 to offset the 526 loader. However the tractor and loader manuals really don't help with determining the amount. So here is my situation:
1. Loader will be used for basic jobs; dirt, gravel, brush. (have the Land Pride 60inch combination bucket)
2. QuickHitch is 70 lbs
3. Heavy hitch weight bracket is 65 lbs
Thinking I would start with 8 weights at 40 lbs each. 70 + 65 + 320 = 455 lbs total.
Does this sound reasonable? Thanks.

 

[MapleLeafFarmer]

Lots of variables to consider but generally thinking in my world you would be close but a little on the light side

 

[Bee-Positive]

An LA526 will lift 1,144 lbs. at the pins. The 3 pt. will lift 1,435 @ 24" back. I'd put 600 - 700 out back.
Try different weights and see what you feel safe with. I run less in the winter for snow and more in the summer for dirt/gravel and digging.