I am not so sure if you can do that .. i using led to driver my led.... Maybe you can pm jameschong or Sherman for help they should be able to give you better advise.. If not search RC diy thread lots of diy led info in there..
You can still holes for the wire, I thought you going to still holes for the led ..like your current set up..
You can search in Ebay there are lots of shops selling grow light.. Cost of it is almost the same as,you getting a driver and 5 led star chips