An alternative addon that allows HUGE macros is Macaroon.
Although it's primary function is to replace all of your action bar needs, you can download it and simply make use of the macro database.
Don't worry, downloading it will do nothing to your current setup. The only difference you'll see when you d/l it is that there will be a 'M' minimap button.
Click on that or type /mac to get started.
It's an awesome addon mate but the learning curve required to use it proficiently is steep (or maybe that's just me lol). I've been using it for years because it might not have the prettiest configuration interface, but it does more than any other action bar / button / macro addon i've ever seen.
Happy gaming
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