Go for it. --
Lugers are John Deere engines with their marine package on it.
Very reliable, good power to weight ratio. Parts available world wide.
Lugger's & John Deere's are Standard equipment in Nordhavn & Kadey-Krogen boats, which speaks well for them as that is good company.
I have run a John Deere 6068 engine hard & have been very happy with it.
Keep the diesel fuel clean by using 2 micron fuel filters & they are very happy at 1500 RPM & 1800 RPM & can run there all day & all night for days on end.
It is a good combo.
Cruise of 7.2 knots continuous at S/L ratio of 1.2 --
if your OK with that - go for it.
Top speed of 8 knots.