Does this pump work with a gx390?

Pretty much what the title says. Just wanted to make sure a wasn’t missing anything. Will a 13hp engine be a good fit for this setup? Was considering the 5.5 @ 2500 belt drive from kec but thought for about the same price I could get a Udor pump instead and mount it myself.

pump and gear box $716
honda gx390 $ 650 or so ($375 if you go the predator route)
unloader $150
Lets say $1,525 before shipping and taxes. What I would be trading is the hose and accessories usually included for a better pump going this route. Any thoughts or feedback would be appreciated.

Yes it will work.

Definitely a great way to go. If I had to do it over again that’s exactly what I would do. I went with a gear drive General HP5535 and it works great. Most pumps will come with the cheaper VRT3 unloader so you can put your own better unloader on and have a solid house washing/concrete cleaning machine for a good price.