Well this is the most exciting thing to happen around Southampton this week!
Five minutes by car or a twenty minute walk for me, was there regularly for Flybe services in the past. Some interesting options, could be time to invest some avios.
The lounge was actually quite nice last time I was in there (via priority pass), it was renovated a bit late 2018/early 2019. If half the flight is silver, it might get a bit tight though...