Arrangement depends a lot on which style you are producing, and also for what/which media. (radio mix, 12'single, movie stings etc.)
Following style and media rules is essential to happy listeners. But there are no rules, so whatever works for you.
I usually select every drum and sound piece by piece to fit with exactly what I have, as I build the track. It can be a long process but I end up with harmonically conform sounds. By jamming loads of stuff in there then taking it away and modifying I guess would be counter-productive, as you can hear loads of stuff that doesn't really fit, that you are fitting stuff to. That's just what the little voice in my head tells me, it's not necessarily right as music is an infinite science full of including chance and probability. Whatever works for you!
epic synth journey... 4am chillout. 28th Mar 13