I think the first thing that the original poster needs to do is to join the PFA and get a feel for the different kinds of kits that are around. Personally I am surprised that anyone would spend £30K or so on a Jabiru when Europa's go for the same money and seem to be very easily de-riggable, transportable and, so I am told, much more capable.
Why not spend £15K on a C150 and use the spare £15K to offset running costs? You & the missus can go anywhere you want then - but can I just give you a word of advice.
Don't plan your purchase around the fact that your missus has indicated she may go flying with you!! You will make a wrong compromise for all the wrong reasons
Regards
Tony
(Recently single again, but still flying!)