The RV flows 09 per head. K series flood jets put out twice the flow of their Vee jet cousins, a K1.5=03 flow.
Now that said....09 of what? cause those lil' pumps don't make didly for operating pressure with an 018 orifice at the end.
Doesn't matter, with the RV you don't really need "pressure" it just has to leak out and the agitation does the rest.
Besides ain't much difference between 100-200 psi pumps, might as well skip the pump and hook to the sink, your water will be hotter and you could actually make use of your flood jets on your RV.
Focus on increasing your recovery, do everything possible there first.