entering into my final year of ownership

[suffolk boy]

as above this coming july i intend to get another car.keeping the 75 is not a option.but i am in a mental muddle as what to do.this is normal for me b.t.w.
options are strip out all the goodies i have added to it such as the bmw head unit bmw hybrid tuner etc (i dont think there is now much call for this stuff). drivers cup holder walnut wheel plus other bits then trade it in.
try and sell it as is.but its a diesel with over 100k on the clock.
but the good bit is unlike several others i have looked at is does not have terminal sill rot.
strip completely for parts then weigh it in.this is unlikely as the market is flooded with bits and i will end up with all the stuff no one wants.
any honest advice welcome.