There are some pieces of commercial equipment that used a similar GM cooler line.
If I was you. And I would want a secure reliable setup, with a long service life. My choice would be finding a hose hydraulic shop. Not just napa or we do hoses auto store. A dedicated hose shop. We do " Aeroquip, Parker, Stratoflex, Gates, Eaton". They will have the better everyday quality to Space shuttle quality hose and fittings material. Sure you probably pay more. It's an investment the will pay back in longevity, and reliability. Unless the over the counter are much improved better material, there new but not better.
I'm not saying aftermarket are always bad, but when companies spec out materials there a fine line between using higher quality and staying competitive to not price your product out of the market.
If you decide to use a hose shop , remind them about keeping the tubing angle placement the same. Good luck.