It would appear from the specs available on the web, that the P750 has 1,000lbs over the Kodiak in useful load. However the Kodiak flys 40kts faster & has 450nm more range. I guess it depends on what you need the most.
The main concern I would have with the P750 is the low wing configuration. If the strips are narrow & rough it could be a problem. In the video on the PAC site the flaps seem to get real close to the ground on a number of occasions & on one take-off you can see a lot of stuff on the underside of the wings & flaps. Perhaps Captain Nomad could give some more information.
Good luck.