Psychoscarecrow

Hi there, I'm new to the forum but I've been reading some post from it since long ago. I just wanted to know certain things that I wasn't able to find trough the forum searcher. I'm thinking about putting an eGPU to my Lenovo B50-50. I don't do heavy gaming, I mean, the heaviest game I like to run is warface (Idk if u guys know it) and I will be more than happy if I could get it to run at 60stable fps at medium. I was thinking about getting the following: -This GTX750: https://www.pccomponentes.com/gigabyte-geforce-gtx-750-ti-oc-windforce-2gb-gddr5-reacondicionado- -The exp GDC 7.0 : http://www.banggood.com/es/EXP-GDC-Laptop-External-PCI-E-Graphics-Card-p-934367.html - And, a power supply : https://www.pccomponentes.com/corsair-cx430-v2-430w-builder-series How do you see it? My pc specs are the following: - Intel Core i3-5005U Processor( 2.00GHz 1600MHz 3MB) - HD Intel 5500 - 4.0GB PC3L-12800 DDR3L 1600 MHz How much improvement it is going to cause? I play games like LoL (It already runs at smooth 60 fps with my setup), Drakensang, star conflict. warface, left 4 dead 2 etc... I know I can't increase my ram, there is a solution similar to the egpu but for increasing the ram memory? I've been looking for cases for the external setup but they are incomprehensibly expensive, no budget cases? If not I can made up something.. Thanks in advance. To finish, I know laptops are not for gaming, is what I got from my parents and I have to make the best of it for my needs. I appreciate any help.