Several years in NY means it will likely have rust. Key points to look for rust are around the strut towers, and the pinch welds towards the front-bottom of the front doors where water from the cowl is channeled behind the fenders...debris build-up causes issues.
The power valve issue was limited to 00-02 model years, but that's not to say it's not possible on 03-04. It does require pulling off the intake plenums to address, but again, 03 models were not in the affected range. Unfortunately, the VIN tag on the engine is buried on the top-backside of the block and not easy to see to confirm if it had been swapped, but it's unlikely it has. Still, if the engine has been swapped and runs fine, then any prior issue doesn't matter much.
The truck appears to be an SE trim given the wheels and 4wd shifter. Since the truck has the part-time 4wd system (as indicated by having a shifter lever instead of a dial switch under the radio), I don't expect any issues with 4wd, but you should always check that.
Truck otherwise looks good to me. €7300 is $8575 in the US, and that's pretty steep for the truck if it were still in the US. But 70K and good interior can go a long way. If you can confirm the amount of rust, and the price is negotiable, it might be a reasonable purchase. You may also want to consider parts availability. I'm not sure what engines were in European-spec R50s (Terranos), but there were turbo-diesel options out there. I believe the VQ was widely used, though, but just note that its VQ does not share a lot of parts with other Nissan VQs. Drivetrain and suspension parts were the same across all markets, though, so should be easy to find those.