Hi WL,
Go for it. I drive over 20K a year on Mainland of Europe - not a lot compared to some folks I know, but I usually cover 18 countries each 5K trip.
On of my tasks is briefing UK volunteers who go out to the Balkans on Humanitarian Aid trips - many are on their first journey out of UK and heading into an ex-war zone. What an introduction to European travel
Unlike ex-war zones, German and Austrian Xmas Markets are fantastic - Gluewein - Sausages - Jagertee - Pretzels - and the magic smells - you can't get the smells on the TV!
First off - forget this 'wrong side of the road' thing - that attitude is an in-joke in the UK. Most of Europe drives on the right side of the road - the right. Tis us and a few other 'remote' islands (Ireland, Cyprus, etc.) who drive on the wrong side - the left! Ha ha
As said, you soon learn to adapt and driving on the right very quickly comes naturally. Problem is when making quick decisions - like hearing a horn or an ambulance - we Brits - tend to go left - to the 'safe' side of the road almost instintively.
My near-mistakes have been when getting off the ferry - in Dover, on the way home - I'm all set to go round the first roundabout on the right. Mrs S keeps reminding me!
Lots of folks make mistakes in RHD Europe and set off on the wrong side - the left - after they come out of a filling station for example, especially if the road is clear of traffic. You can get a big sticker with an arrow pointing to the right (or left if you turn it up-side down) to put on the dash to keep a constant reminder if you are really worried!
You don't need any more special equipment than what a well-prepared driver would carry in the UK. Forget what is legally necessary, and get what is sensible as well.
Warning triangle.
Reflective vest things for all the occupants - stored in the car not the boot - so you can exit the car with it on.
First-Aid Kit
Spare bulbs
Headlight Deflectors - I carry a set but have never fitted them.
Fire Extinguisher
Folding Plastic Spade.
Decent sized torch with spare batteries.
Low temperature windscreen wash - -40 or lower - (try Lidl)
Tool Kit
Spare Fuel can. Technically the ferries forbid a full can of fuel - but in 40 years no-one has ever said anythingto me. But beware - running out of fuel on a motorway in most countries carries a fine.
'Winter Equipment' - that normally means M+S tyres or ones with the 'Snowflake' symbol, or chains.
Germany - unlike Austria - does not specify exact dates when you must have such tyres - only that you need them in 'Winter Conditions' - which usually means temp below zero - or falling / lying snow.
Austria now has a new law which states that any tyre (no matter what type or with what symbol) with less than 4mm is not a winter tyre.
You should have no problems with a Freelander with 4X4 tyres on - as long as you have 4mm or more for Austria.
No need for chains either. They are compulsory on some winter sports area roads during very bad heavy snow conditions - but there will be warning signs and lay-bys where you can fit chains - or turn round and find a lower altitude route - or better still have an extra day in a hotel till the road is cleared properly. The rules say either chaind or winter / M+S tyres - so again no problems with a Freelander.
I actually carry chains for all 4 wheels - but then I am not usually on holiday - and like the trucks I have a schedule to keep to - not for me the luxury of an extra day in a hotel.
Oh - and these new French alco-test thingies.
Sorry this is so long - but I thought if you were wanting a serious reply rather than jokes - this is it.
Singvogel.