I've found that chest rigs and belts can be a difficult combination. Mostly this is due to any pouches (or magazines) on the belt sitting too high and fouling any pouches that sit at either side of the chest rig. For that reason I don't tend to use a belt any more, other than one to hold my holster which sits in a mid-ride holster so low enough not to be an issue.
The best way round it I've found is to wear the chest rig as high as practicable, and mount pouches low on the belt if you can to buy yourself some space. However, some magazines - like AK ones - might be too high for that to make much difference. I've found that pistol magazines don't tend to be too much of an issue.
As for the dangler, I wasn't sure at first but I've grown to like it, really handy for holding MK5's, pistol magazines, snacks..... Give it a go and see what you think.