Getting starte: My first project: Cruise control for ebike

[system]

Distance sensor for the traffic ahead
http://www.ebay.de/itm/1pcs-Ultrasonic-Module-HC-SR04-Distance-Measuring-Transducer-Sensor-for-Arduino-/261009210866?pt=LH_DefaultDomain_0&hash=item3cc55c7df2

Foto sensor:
http://www.ebay.de/itm/3-3-5V-input-LM393-light-Sensor-Module-for-Arduino-with-DO-AO-output-/200830076464?pt=LH_DefaultDomain_0&hash=item2ec267c630

Motion sensor (for the light)
http://www.ebay.de/itm/Infrared-Body-Motion-Sensor-Module-For-Arduino-PIC-C3-/280994833150?pt=LH_DefaultDomain_0&hash=item416c98e2fe

Temperature and humidity sensor
http://www.ebay.de/itm/DHT11-Digital-Temperature-And-Humidity-Sensor-Moudle-Probe-4-Pin-for-Arduino-New-/140763137606?pt=LH_DefaultDomain_0&hash=item20c6230646

Hall sensor
http://www.ebay.de/itm/NEW-Hall-Element-Switch-For-Arduino-Magnetic-Detect-Car-MEGA-2560-UNO-1280-A040-/110951914948?pt=LH_DefaultDomain_0&hash=item19d53fddc4

Are these the ones I should get?
Or can I just buy any analogue sensors from an electonics store?