Ouh, that's not a question, of course, but actually an assessment. :)

Of course without guarantee :-) : But I think it would all fit. What is the purpose of the system? If you want to do some gaming, I would recommend a larger SSD (at least 256 GB, but ideally 512 GB). The manufacturers calculate with 1 GB = 1'000'000 KB, which is actually 114 GB. Windows plus the standard applications probably take about 25 GB, which leaves only 89 GB. And today's games often require 50 GB+ (e.g. Doom, GTA5, Assassin's Creed: Syndicate, Black Ops 3, Wolfenstein: The New Order). With a 120 GB SSD, storage space quickly becomes a scarce commodity. Of course, you could still use the HDD, but the speed differences are very noticeable.

No. If you want a CPU that you can overclock, then you have to take the CPU with a K at the end. For those with a K, the multiplier is freely adjustable.

Yes, there is a cooler with

This is in the product description: Processor Family: Core i5 6th Gen