without sounding like azzz, maybe with only needing 4 circuits, just wire it from scratch ? i have done 5 projects like that using a couple of "universal" type schematics,[with way more circuits than you need] and although it took some time to do, it was quicker and cheaper in the long run after you figure in the cost and time combining 2[or more] kits from different manufacturers to get just the right combination of circuits with the correct wire gage and relay combo[s]. just my experiance and opinion.