Well, if you will listen to me, your nerves will be fine. This is the last time I am going to say this..... the super garden tractors (like the 982) use THE SAME PUMP and the implement relief pressure is set to 700-900 PSI.
To back up my advice, I have been a heavy equipment tech for 20 years, with vast hydraulic experience. I know that pump well, and I'm certain you are still well under its limit.
As far as advantages to a seperate pump.... Maybe more flow if you get one with a larger GPM, but then you will only be able to push "X" amount of fluid through the hoses and valve.... so you may not gain enough to justify the cost. I had the GPM of the rear pump figured, and posted it here before, but can't recall the GPM. Sticks in my mind it's around 5 GPM at WOT.
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