Are these computer specs good enough to last me at least 4-5 years? any suggestions?

80% of that is information I do not need to make a decision about the longevity of the computer. Therefore I didn't read it. I'm guessing you're buying a built system, which I do not recommend. I say build it yourself. It'll be cheaper, you can get exactly what you want, you know if each specific part is good and from a good manufacturer.