Go to the local hardwhere store and get a large circuler pan used for boiler water dranage it is about 15 to 18 in round then line it with tenfoil, dull side out because the shiny side will create hot spots and then use some macanical abilities to hook your bulb to it. For the corde, no it is not hard, people do it all the time. I have 2 1000w ballases rigged up with a cord that is spliced.
Adieu