That laptop would be just plain mediocre in Premiere Pro because although its 8th-generation i5 mobile U-series CPU has four cores and eight threads, it doesn't have as much L3 cache as its i7 siblings. And the GeForce 940MX is based on a first-generation Maxwell GPU (GM108) that made its debut at the same time as the GM107 that was used in the GeForce GTX 750 and 750 Ti desktop GPUs back in 2014. At least the GPU, as used in that Asus laptop, does use GDDR5 SGRAM rather than the lousier DDR3 SGRAM, so that laptop's performance won't be terrible.
Laptops are not well suited for editing. Their keyboards generally suck, their screens are too small, and you can't install enough hard drives for comfort.
Build your own workstation. Use Intel CPUs and a 1000 series nVidia GPU. You'll want at least a 24" 1080 monitor. Include at least five internal drives for best performance/organization.
D: Project files, audio files, still images
E: Cache & Scratch
F: Camera media/proxies
C, D and E can be SSD's. F and G will need to be the largest drives, and could get expensive as SSD's. You might be better off with HDD's for those.
Don't forget to include some type of backup and archiving solution. (I prefer USB 3 external drives for this.)