hmm, getting rid of the right bar would help I guess, however that is not currently possible as I didn't add hiding of familiar drops and pool buffs etc. What I plan on working tomorrow is add zlib variable editor with explanations what everything does, so you will have the option of only displaying the main bar, which should solve the problem alltogether (hopefully - it would reduce the minimum frame width needed to 550px so around 1000px for the whole game unless you shrink chat/charpane, leaving you ~280px for miranda), unless you like the side bar. you can now hide most of the things, however I have not kept up to date with all the widget options. This will take a couple days to do anyway, so don't expect a fix tomorrow as I have something started in this which needs to be sorted out first.
As for the pool stuff etc. I might mess around with the layout later on to make it more lower res friendly. At the moment you pretty much need 702px minimum in that frame to display correctly. I know it is a poor design choice, but I just like things big. Maybe, I'll provide an alternate stylesheet for lower res or something. Will see how it goes.
Try to keep up with the versions I post in here until I officially release a new version, which won't be until I finish the buff widget and the variable editor. Also thinking of one or two more things but not too sure if they are at all possible.