Can you tell us which 45 gallon sprayer you have? It would be a LP20852 or LP22908. The LP20852 has a TeeJet spray wand and a silver pump. The LP22908 has a black handgun with a red nozzle on the end and a black pump. The model number is also located on the unit.
So it sounds like 50' of hose and stainless clamps for each end will do what you need. We do not have quick connects at this time. You can call our sales number, 717-569-3359 for pricing and to purchase these parts. Tell them you talked to me on GTT. When working with this hose, it can be hard to remove or join with fittings. A little heat from a heat gun will make the end more pliable to make it easier to assemble.