I've been recording, mixing and mastering for the last 11 years and your logic of mixing is dead-on. You have to remember that mixing is subjective (opinionated) so I say do the Low Frequency Managment (cut the bass out to clear it up) and if you want to make them pop out a little more add a few decibels between 1k-5k. What I do when I do create a string sections I usually use octaves to separate them a little easier. Most importantly do what feels natural to "YOUR" ears. Good Luck...and when your down if you can drop me a link or snippet of the track...I love hearing new music!
Thanks for the info, I will let you know how it goes. Here are some string quartets I did a while ago:
I a working on writing a string quartet tutorial at the moment, what forces me to go into detail for every aspect in the recording proces, what actually is really good for me to learn this. I noticed that the best way to learn things is to teach them to others!