- 172 will be fine.
- You can't identify the runway as such, position yourself relative to the tower, hill to the south, and the compass.
- There's a lot of thin standing water, so it doesn't look very dry even if it's declared as such.
- Clean everything off with fresh water after your return home, particularly the undercarriage/wheel/brakes.
- Use radio/GPS nav to help identify the right island, it saves time and nervous energy.
G