1 - 3 horas
First the hinge had a problem that would not stay upright it would go all the way back and was annoying to say the least. i thought at first it was just some loose screws and upon inspecting the insides with the helpfull tutorials, i saw the the clutch hinge was in fact broken from the rod, so i went ahead and ordered the hinge and the inverter cable(long story short i damaged the cable because i didn't know how to take it off and the screen was black when turning on). so after replacing both and reconnecting the camera cable, which wasn't working either when i bought the mac, all worked fine.
i can assume that my 450 dollar purchase increased in price after these fixed issues.
after following all steps carefully and labeling all the screws i was able to fix my mac with little problems, i am now typing this on my macbook and everything is working like nothing happened
only advice would be to be patient and follow the steps carefully, which are very useful, i have never opened a mac, let alone a laptop for that case, and this was my first laptop repair i ever made, and turned out successful.