Some interesting points
RFGuy I have actually been negotiating the purchase of a Jabiru 160 . I think it might be the same one that you mention from gumtree. I have considered the option of converting to RPL and I know eventually I will but right now I'm in that stage of my training where I am close to getting my RPC and you just can't resist the urge to buy your own plane ASAP and have the freedom to fly whenever you can. I'm sure most here have been through this.
I have thought carefully about my options for the near future and a Jabiru 160 perhaps stands out. At 312kg empty and 540kg MAUW it can carry me and my wife (120kg combined) and 20kg of luggage(which I feel would be enough, wife might disagree) we would still be able to carry enough fuel to have 6 hour+ endurance and cruise around 90Knots . Spares would be most easy to source and probably cheaper too. So it does tick all the boxes for me , for now. In time, as with everything else in life I'll probably want something faster and nicer so may move into GA as the wallet permits!
BH