Double up on 1 can lager kits?

[Gemok]

I've just been reading through the threads on Cooper Headbanging stout and Coffin Dodger and was thinking about trying a lager version while we still had some cold weather the general idea being

• 2 cans morgans blue mountain lager[/*:m:pe43rr7f]
• 500g light spraymalt[/*:m:pe43rr7f]
• 1kg brewing sugar[/*:m:pe43rr7f]
• bottle and forget about till the summer :whistle: [/*:m:pe43rr7f]

Not sure what yeast I'd use yet kit, nottingham or saflager 23

Any reason this shouldn't work do you think?