I got a lot done this weekend!
(http://www.users.on.net/~cerebus/marqueed.jpg)
Routing the slot for the t-moulding was a real nightmare. Because I'd already screwed it together I could only route between the screws. This was a very slow process - I didn't want to accidentally hit the screws - and because I was viewing the router side on I got covered in nasty mdf dust. When I installed the t-moulding I had to cut out the vertical part of the "T" for all areas that didn't have a cut.
After this I touched up a few areas of the paint and gave it two spray coats of acrylic sealer. I also installed the speakers, fan and fan grilles.
I ordered a styrene marquee which is quite light and so I was able to attach it with velcro only. Easy to remove when I need to take out the monitor to move the cab.