I would grow the Blue Dream and throw the rest away. I imagine he didnt name them because that's what they probably are, no name bag seed from what I'm sure was 'seeds from a killer bag he smoked in 09". Because why would he only name 1 bag of seeds and not the others? Me personally I've learned to steer clear of unknown strains and bag seed.
Unless you know for a fact he bought those seeds from a reputable seed distributor and just didnt label them for whatever reason.
I would even go as far to say that the blue dream is probably from a Hermie female plant that produced seeds. Someone sold him a bag of blue Dream bud and it had seeds in it. I could be wrong but I'd be leery.
Once you factor in how much you spend on these guys to properly grow weed. You tend to want to invest your money with a reputable seed dealer with good genetics instead of a mystery bag seed that has a good chance of going hermie on you or be male. like money spent on electricity, soil, nutes, wear and tear on your equipment, 2 or 3 months of your time down the drain just to find out their males or it turns hermie. Been there and it sucks. You can buy good seeds online for under $50 for 5 feminized seeds with known good genetics. Hell you'll spend well over 50 on your electric bill alone trying to find out what exactly your growing.
It's just not worth it in my opinion, but Hey, to each his own!