I think I'll maybe just do what Danny suggested above.
Create new paper wallets every 5-6 years & transfer balances.
Easy enough.
Plus let's be honest we should know in 10 years if bitcoin is going to be a huge success any way.
So I'll be either selling most of mine at a very high price or keeping paper wallets that are worth nothing.
I guess you are doing the same as me. Either have lots of purchasing power with all your btc in the years to come.......or............have a load of worthless numbers in a wallet.
I am in this for the long haul.
Fortune favours the brave my friend.
I'd rather take a few risks in life with the chance of becoming rich some day rather than watch others take risks and benefit.
As long as you don't buy so many bitcoins that it gets you into trouble financially you're ok.