Welcome tot he board. I spent a few months in Akrotiri in the summer. Yes is only slightly cooler than the forward face of Mercury. You may want to look at some of the vendor websites for air conditioning options (mine works really well). They also sell seat kits. The seats are bolted to tub and through the wheel well with some re-enforcement plates on the underside. There are lots of options, single jumpseats, folding benches for two, forward facing. The possibilities are only limited by your pocketbook. As an example, these folks have a lot of what your asking about illustrated.
Defender Parts & Accessories Home - Rovers North - Classic Land Rover Parts
There are lots of other vendors, they have one of the nicer websites. Shipping from the US to Cyprus might be ridiculous.
While I was in Cyprus, the UN had a wreaking yard for Land Rovers damaged in Palestine. There where hundreds of them there. Should be some seats on some of those, they kind of all work on all models with small modifications. I have seen sellers on eBay UK that are selling parts from that lot.
Miss having a full Kabab and the free Kokineli, albeit drinking the Kokineli diminishes your ability to remember the meal.