Needing to do a similar job, I looked on the above site, and more generally. I eventually decided to go with
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As I could collect locally, with no shipping cost, three of these gave me the most lumens per pound.
They are very lightweight, and the mounting clips are a little primitive. The fixed lead is not the most elegant, but for surface mounting in a garage works fine.
Compared with the aged fluorescent, the results are literally dazzling.
Chris