Sounds like an awesome honeymoon!
I got a message I'm not allowed to post links...? But here are some sites you can search and might find useful:
This is an english forum for jimny's:
- bigjimny.com forum
I see from your license plate your are also from holland so here's some useful dutch websites you probably already know:
- modderpoel.nl
This one is a forum for vitaras but about half the members have replaced them with jimny's by now...
- ploeteraar.nl
I had plans to prepare my jimny for simular trips but stumbled upon an old unimog which was already complete and had just come back from journey around africa, so bought that instead...
I saw on your website that you already visited suzi's place, I haven't met anybody yet who knows more about jimny's than Arno so I asume he has already given you some advise for your preparations.
As for the springs, I would finish the rest of the car first and load it up with everything you want to take and then see how you like the ride. Original ground clearance on a jimny is 190 mm (chassis to ground). Everybody who has ever owned a vitara, samurai or jimny knows how rock hard the rear suspension is. I know a lot of guys who always drive around with a bunch of weight in the back just to get the springs to do something... and you have the hardtop which is 25 kg lighter then the convertible so you've already saved yourself a bit of weight there
I definitely would not install a steel bumper, I drive technical trials with my modified jimny but still use the standard bumpers. Have already crushed them several times but they just bounce back

! But the original towing eyes are completely useless and will tear off just looking at them. In the front I would weld a strong eye to the chassis. At the rear I see you already have a towbar, I would keep that and weld a strong eye to it. The towbar will make the departure angle even worse but can work as a protection for the fueltank.
The electric socket for the trailer hitch is in the original position, I would put that away somewhere behind the rear bumper if your not going to use it. Reduces risk of damaging it (as I found out the hard way, a lot of after market towbar installs tap straight into the wiring loom that goes from the left side of the car to the right, this means that when you damage the socket none of the lights on the right side will work anymore...)
The standard jimny jack is not very tall en in mud often not tall enough. If you are considdering a highlift jack you can use the rear towbar as a jackup point and at the front you can use the chassis if the bumper is removed.
Weak points:
They are pretty strong little cars and very easy/simple to work on. Couple of things i've read and found myself are:
- Leaking crankshaft oil seal, I got so tired of replacing mine that I just fill it up with oil every 1000 km orso...
- wheel bearings: they wear out quick with bigger tires, (so doesn't really apply to you but I would check them before setting of on a long trip with bad roads)
- rear axle: I've heard of overlanders having the axle broke where it is welded to the diff after driving on washboard roads for long periods. (I have spoken to the guys at suzi's place about it and they had never seen it, but in holland we don't have washboard roads.
Some other weak points, but should not be a problem for you if you keep the drivetrain original:
- Propshaft wears out quickly at extreme angles, after having replaced mine 3 times in 1 year I replaced it with one that has u-joints on both sides. Never had a problem sinds.
- half shafts, they break easy with bigger tires. Stronger after market are available.
- transfer case, original is chain driven which tend to brake or become slack.
I have not had any of the problems with the last mantioned above and mine has a 4.5 inch suspension lift, 2 inch bodylift, 5.14 reduction gears and sits on 31" tires. So it mostly depends on your right foot I guess...
Last, Fuel consumption:
When my jimny was standard I got on average 12.4 km per liter. With all the modifications I still get 10 km per liter. My gues is you will get about the same as mine after the mods...
Try some of the dutch offroad events, they are cheap and you learn a lot (especially what not to do by looking at some of the other drivers)
That's about all the bull.... I could think of.. Enjoy your jimny!