"StacheHouse: I would recommend looking into "internal bypass diaphragm pumps" as they are for rv's they are food safe and will turn off when you turn off your sprayer and pressure builds up. Has been a perfect pump for a hash sprayer."

https://www.freshwatersystems.com/products/shurflo-8005-733-155-demand-pump-1-5-gpm-60-psi-115vac

If this pump is correct, the main difference from the one in the kit is that it's inline, not kept in the bottom of the collection bucket like Pelle's set up.. If priming it isn't a pain, it seems good.

We'll everyone here it is, a sprayer system for a grand total of $196.93 (not including thread tape)

Pump: $95.99 Lanchez 1/2 HP Shallow Well Garden Jet Pump

Outlet Hose: $25.99 BEAULIFE Metal Garden Hose 25 ft Flexible No Kink

Inlet Hose: $10.99 BEAULIFE New 304 Stainless Steel Metal Garden Hose (1 Foot)

Bulkhead: $17.99 Horiznext npt 1/2 homebrew ball valve kit stainless steel  bulkhead

Sprayer: $15.99 High Pressure Power Washer Wand

1in NPT ->  Garden Hose: $14.99 1 NPT Male x 3/4 GHT Male

On/off switch:  14.99 Indoor Remote Control Outlet