I'd take the $1 million.
I'm aware that in the long term, the monthly income would be more fruitful, but the future is uncertain, so I'd rather have a lot of money instantly, rather than more money but in relatively much smaller installments. This goes for whether or not this is in my native currency, the British pound, or still in the dollar.
As for the other options, I'm only 19, so ageing 10 years is absolutely no problem for me; I look forwards to it.
Not needing sleep would lead to my eventual insanity; I need a period in which I can just shut down in order to process everything and then reboot nice and fresh (that made me sounds much more like a robot than a person...).
A trip round the galaxy would ultimately bore me, it would be a lot of empty, lifeless planets.
Finally, the free ride option is just so inferior to the others; despite how much transportation will cost me throughout my life, I still stand by my argument for the $1 million in that I don't know how long I'm going to live, so the instant very large cash sum is a much safer bet than aiming to live 'til I'm 90 so that I've raised a million dollars worth of bus tickets.