Preparing for long term storage (2 years) I have two bicycles - one is an alloy MTB and the other is an old steel frame roadie. I intend to box them and keep them in my parent's garage for the next ~2 years while I will be overseas for work. Selling is not an option (for emotional and real value). I plan to box both bikes as they come from the manufacturer:

pedals, handlebar, chain and seat off
Rear derailer removed, wrapped in bubble-wrap and tied to the frame
Current tires will be sold off and an old useless pair installed with old tubes nicely coated with talc to keep them from becoming sticky.
Healthy doses of lube on the cables
Plastic wrapping on the MTB brake discs, spacers in the calipers.
Box taped down with lots of duct tape.

Storage tempeatures will be from 5C to 45C during the year, and humidity will be low-moderate most of the year. Is the above scheme adequate? Anything else I should look out for?
Update: Thanks for all the pointers. One point I forgot to mention is that the bikes need to be shipped from my current residence to my parents first. The overkill packing is intended to ensure that they survive the transport and also the boxes can just be stowed till I get back, requiring no attention.
Update2: 4 years later
Due to multiple reasons, latest being the Coronavirus pandemic, the bikes have stayed boxed for 4 years almost to the day. I'll be getting them soon and will update this thread soon.
Your plan sounds pretty sane to me.

Depending on how tolerant your parents are, I would prefer to leave the bike intact and open to the air, so it can dry if it gets damp, but that may not be possible.

I returned from uni, a long time ago now, and dug out my old mountain bike. It hadn't been prepared for 3 years on its own but came out just fine, less a few parts my brother had relieved me of.

When you return you'll want to give them a pretty through service but over 2 years nothing much should have degraded.

Tires would most likely be fine, if they're tubeless the sealant will have dried out and either disappeared or formed a lump of goo. They'll be flat and may crack along the fold.

Some bolts will have some surface rust.