I can't say it is generating more heat as I am using 80 Plus Platinum PSU and cannot discern any increase in noise level. But heat within will be noticeably higher than most other chassis with dedicated fresh cold air intake vent.
Cable management wise still doable. You need some planning. For me, I basically stuff and hide most cables excess in the narrow empty space between PSU and chassis front panel. And I route CPU 8 pin and top mount fan cables underneath motherboard so you need to get hold those cables down there before screwing on motherboard mounts. And I also mount SSD on the topmost 2.5" slot so I could hide SATA power and data cables beneath the SSD. Yet, I was also able to house another NZXT Hue box for my RGB in that same space!
Oh and do take note, their 3.5" HDD screw mount is a bit smaller than HDD width, rendering it useless. So I simply seat my HDD without any support on the base.
This case is pretty cool looking and cheap. But other than that it's a pretty much sh1tty chassis to work with.