For someone like me who has limited (but improving) camera repair skills, often I take time to decide which options to go. I read, research and analyze the problems until I have a rough idea of what a repair might entail. Even we all want to rush to solve the problem, it definitely pays to be patient and deliberate. Then
1) If the camera is mostly functional (like >70=80%, e.g. only slow speeds are sluggish or not working), I would go "option 4" do nothing and keep using the camera until the fault is not tolerable anymore.
2) If the problem prevents me from using the camera effectively, AND the fix seems to be reasonably within my capability, plus the monetary/sentimental value of camera is not that high, I will go for "option 1" and try to fix it properly myself.
3) If the camera's monetary/sentimental value is quite high and the potential fix is beyond my pay grade, I will pick "option 3" and seek the appropriate repair expert. I will gladly pay the money that will get me a perfectly working camera.
I hardly ever do "option 2" or shortcut, since several experience told me it could do more harm than good. Except maybe for really disposable cameras and for practicing.