Hi Matty, and welcome to the joy of the Landmann Kentucky.
It’s not a particularly good barbecue, in my experience, but perhaps because of that it is a great device to learn on...
It is leaky, so you have to learn how to control airflow (and probably invest in some gasket tape).
It has a large temperature drop-off in the main chamber, so you have to learn about heat zones.
But it is also a jack of all trades, meaning you can learn how to grill, smoke, and low and slow with a single rig.
I used to be able to hit 225F pretty consistently about a third of the way into the main chamber when smoking from the offset. The rig does burn through a lot of fuel (like any direct flow offset), but if you make sure the briquettes have enough oxygen, hitting 250 or even 275 in at least a third of the main chamber should be doable.
Although I will say that 375 is not on the cards with the charcoal bed in the firebox. You would need to have the charcoal in the main chamber and banked to the end nearest the firebox to hit that sort of temp, and at that point it can become partly radiative (or direct) heat rather than convective.
Seal up the gaps, have a play around with some cheaper/more forgiving cuts, and get to know your rig. You’ll be churning out great food in no time. The best Côte de Boeuf, paella, and ribs I’ve ever done in my life were on the Kentucky.