I have a lot of the 1010 accessories.
It's a tight fit to get them into one Systainer, even using all the nooks of the unit. Unfortunately, the wrench is at the bottom of the case, so even taking out the router to do a simple task requires unpacking down to the bottom.
I have a few of the accessories in an adjacent Sortainer drawer just to make things easier. I think it's a good idea to consider a separate Sys1 perhaps to help you get organized and efficient.