Should I replace hardware or do I need to reconnect boards?

Dear people,

I dropped my MBPr recently. Since then the following hardware doesn't work anymore:

- wifi

- bluetooth

- hdmi input

- sd card input

- right upper usb port

- headphone jack.

After some research I figured that none of these are connected to the motherboard. The first two problems in my list might be due to a faulty airport card. The 3rd, 4th and 5th are probably due to a faulty IO board and the final one might be due to a broken headphone jack. However, I just hypothesized that it might be due to the fact that the cables connecting these to the Motherboard are disconnected. I was wondering how great the chance is that this happened?

The macbook still works fine right now, and I can still use it through tethering it with my phone in the other usb port on the left side. If I open it up, I might break the laptop completely so I wonder what my chances of succes are. Very interested in you guys' opinion. Thanks in advance!