From your own description, it doesn't sound like a Rwd is really for you... in that I am not hearing you being up for he challenge, which it may well be?
As it is your hard earned or pension, personally I would struggle to force myself to pay the new car registration tax or the > £40k luxury car, road tax premium for the next 5 years. I appreciate if you have some kind of my last ICE car to my specification thing going on, it may be overlooked?
I appreciate it is a different BMW 3 series, but a long term Porsche owning friend with whom I have done quite a few track days. bought himself a new M3 a few years ago, he was driving down a straight dual carriageway, within the speed limit when it started raining, the next thing he knew the car had aquaplaned off of the road into a ditch without any warning at all... he is now back in a Cayman S. The BMW just went without any feedback, Porsches can bite, but they tend to communicate before they let go in my 30+ years of 911 ownership.
I am not saying a 230i will throw you off the road, but the above scenario is less likely to happen in a Fwd GTi, & even less so in a 4wd R ?