6 cause I'm sh** at stacking
Better, you could mount your extenders horizontally (so they make a line like this ====) instead of vertically (the way you have them now, where it looks like this 0000). That'll save you a little weight for some external armor.You could get rid of the srimech by mounting the two popup motors the other way (flip them around so the shaft is more forward), and you can also make the chassis even shorter by moving the slider to the very top of the chassis bar then clicking underneath the bottom of the slider bar.