Agreed 100%. I remember that I recommended the forum recently to someone who was a member of our FB page up in Scotland on the basis that someone on here might grab a bargain before it hit Autotrader. Alas, the pile on was exactly the same as this one.
It's very much personal choice here. I've never used a repair kit as I've not wanted to take a chance so opted for a space saver. In fact, recently, I've replaced the space saver with a full sized spare! Either option compromises boot space to laughable impractical levels.
Welcome to the forum and to Z4/E89 ownership. The car looks in great condition. Private purchase or from a garage/mileage? (Just curious). Auto or manual? As has been mentioned, Salmon Relays are the cheapest and easiest preventative work. 5 Minute job and available from your local dealer for...