No longer an E30 owner, nor a BMW for that matter I am looking at getting back into the BMW fold

Following the birth of my son last month, I need a 'baby wagon' and have discounted the more sensible choices.
I was looking at a Lexus IS 300 Sport Cross (good spec. and RWD) and E39 Tourings (well built and RWD).
I am going to look at a 2003 E39 530i Sport Touring at the weekend. I wanted a 530D but they are hard to come by so will have a look at the petrol one.
Any issues that I should be aware of?
Thanks in advance.
Mahmood