Congratulations ! she's a beauty! 65K for a 10+ year old car is almost unheard of, but I suspect the number won't stay so low for long after you start enjoying the car more. The N52's are solid and reliable engines, not the most economical or powerful, but smooth as silk and tons of fun to play with.
However, being a engine from the BMW Bangle era, there are some common and cheap preventative maintenance items you should probably consider, more for future-proofing than anything, because at one point or another they will give out, for most of the items there's no specific mileage or age where they fail, so you'll have to keep your hand on the car or just keep it in the back of your mind. These include:
OFHG - Oil filter housing gasket
OFCG - Oil cooler Gasket (if you have an oil cooler I'm assuming)
Aluminium water pipe fitting upgrade (same as n54/n55) This WILL CRUMBLE when you do the 2 jobs above, or even look at it too hard, very rare, but has been heard to fail during normal operation, empty the cooling system and leave you stranded.
VCG - Valve cover gasket (drips oil onto exhaust manifold and smokes)
VVT Gasket - Valvetronic motor gasket (fills the spark plug valleys with oil and causes a miss on Cyl 3-4)
PCV valve replacement (I would honestly just wait for one of these to fail, and then tackle them all while you're there)
ECC Gasket - Eccentric shaft sensor seal (wouldn't bother, unless it started to fail, or you were doing the VCG)
Things to consider (budget for) replacing for longer term ownership:
DISA Valves (run to fail)
Brittle cooling system pipes (especially the top radiator hoses)
Waterpump (run to fail)
Thermostat (run to fail or replace with waterpump)
Vanos Solenoids (clean/inspect maybe once a year, run to fail)
Vanos check valves (clean/inspect maybe once a year, don't really "fail")
and the radiator while you're at it, why not, they age and develop pinholes.
common serviceable/consumable items:
Coil packs
spark plugs
V-belt and tensioners/pulleys
that's about it, tese are just the common issues amongst owners, other failures are possible but not common like sump gasket leakes, guibo failure etc, but anyone that would like to add to the list would be great. Most of the parts above are available from the big chain Spares stores if you choose to go that way, and with the exception of the longer term items are quite cheap.
And there's your 4 min intro to N52 ownership 😂
As payment I will accept the wheels😅😅