Camshaft position sensor "A" circuit

Hello All,

I have the vehicle listed above it is the Limited and I noticed the following problems:

1) Difficulty in starting.
2) Hard shifting between gears.
3) When the car is idle the sound goes high and low.
4) Sometimes while driving, the car goes off and I have to battle to start it again.

I did a scan and found out the following errors: camshaft position aensor "A" circuit, ignition coil "F" primary/secondary circuit and output speed sensor "A".

codes: P0356, P0722, P0356.

I need to know what to do next as I plan to buy replacements of these three parts, but I need advice.

Thanks