Convertible Top...

I need to replace the convertible top, window, pads, and well on my 64 Dart convertible (I will be adding a boot as well). The parts will cost around $600.00. My question is, should I pay another $500 - $600 to get it all installed, or should I do it myself? It doesn't seem like rocket science, but it also sounds like if it isn't done just right, it can go bad, and be expensive to fix. You input is greatly appreciated.

THANKS.