Bill, for your application, the florescents would be just fine. You will need 8 four footers in each fixture, though. Have separate switches so you have two banks of four tubes so you can control the brightness some.

Also, if you use a florescent grid screen on the front you can create a directional light that controls the spillage.

Do be aware that they do produce heat, so your fixture will need some form of venting.

I have worked with these new high power CF bulbs with umbrellas. Not too shabby.