Sounds about right.
Sadly my own GTV has languished in the garage for too long (work postings and other reasons..
) so I've seen what works and what doesn't.
If you wash your car before putting it away, just drive it round the block first to get the brakes dry, otherwise they instantly get a film of light rust on them. Even half a mile will dry them out.
Park with the handbrake off.
If you have a fetish, jack the car up and put it on 4 axle stands... this makes it easier to crawl underneath to grease up the handbrake pivots, cables etc. or generally fiddle about when you're feeling the need to touch the beast again.. It also saves on tyres and wheel bearing/bushes problems maybe.. Otherwise, just over-inflate the tyres and leave it parked on its wheels..
Leave the windows open a little.. but get in there every few weeks and give the dash surfaces a wipe. If it's bone dry in the garage it's fine.. but if it's even a touch cold/damp, you could get some condensation in the cabin. One of those electic fan heaters in the passenger footwell sorts that.. but don't use it on "Heat 3" .. just the coolest setting.. and aim it at the roof rather than at any seats or carpets.. or you'll set fire to something. You're only trying to circulate some warm dry air remember..
Some people say "fill the tank" so that there's less air in the tank for the petrol to evaporate into (petrol lasts longer?) but for even 6 months, you can get away with leaving the tank alone. A slightly empty tank allows you to drop 2 or 3 gallons of fresh petrol in there (plus some octane booster) when you come to start it.
Leave the car locked via the key. I would disconnect the battery altogether since the immobilisor and clock etc do touch it up when you're not looking.. But give it a charge every 2 or 3 weeks or use a conditioner. Batteria nuova
is expensive so that should be your biggest concern.
Check the coolant strength and level. Top the level up with neat (100%) coolant.. to give whatever is in the system a boost.. and then work it around by running the engine .. while you take that "dry-the-brakes" trip around the block maybe. Your car won't freeze.. but the coolant will control any corrosion in the system... your thermostat for instance will "retire" if you have too-weak coolant and leave the beast immobile and unchallenged for so long.
Oil.. leave it if it's remotely okay... but change it next spring since it's been accumulating a load of condensation in the meantime.
Give your wipers a clean with some window cleaner on a cloth and then rest them on a piece of cardboard rather than on the window. It keeps them from becoming "flattened"... but for a few months it's probably not too necessary.
If you can though.. use the beast on the odd day when it's dry and fine.. since the exercise will be good for all the components and you park it with a different part of the tyre/bearings taking the load.
Meanwhile.. I'm taking my own advice.. fitting a new 'stat into my GTV next week (?) so that it can venture out over the winter too..