Stick with , should be fine .
Remember, i3 are now 4 cores 4 threads.
Current and older games recommend 7th gen and below i5s which were at the time, 4 cores 4 threads .
Grab another stick of ram, single channel will effect your minimum frame rates and can cause stuttering I found .
Pasty is right, system should be a good performer
For MS2
MINIMUM SYSTEM REQUIREMENTS:
OS: Windows 7 32-bit
CPU: Intel Core i3 or better (gen 7 and below !)
RAM: 4GB or more
Graphics Card: GeForce GT 730 / GeForce GT 630
HDD: 8GB or more of available disk space
RECOMMENDED SYSTEM REQUIREMENTS:
OS: Windows 7 64-bit
CPU: Intel Core i5 or better (gen 7 and below !!!)
RAM: 8GB or more
Graphics Card: GeForce GTX 750 / GTX 750 TI/ GTX 650TI / GT 1030
HDD: 8GB or more of available disk space
Your system will be fine !!! Above recommend