I’m having some trouble in what motor to be used in lifting 150kg of weight and what motor to use for the movement of the forklift.
well, you’re definitely going to need a big motor to lift 150 kg. I hope these links help you:
https://www.engineeringtoolbox.com/electrical-motors-hp-torque-rpm-d_1503.html
https://www.convertunits.com/from/kg+m/to/lb+ft
http://forum.arduino.cc/index.php?topic=5978.0