FTL viable in this config?

Standard pally with 4 shammies

I use Left Alt for vent and my quickbars I've always used 1thru= and Shift1 thru Shift=, so I'm forseeing that conflicting with the fast and easy setup of FTL that's provided in the ISBoxer wizard. Am I mistaken that it will conflict, how would I best work around it if that is an issue? Or should I just use a focus based target and hold? (I don't pvp).

I also recall reading somewhere that using the Right Alt key as one of the modifiers can cause problems.

Goal is FTL based following and assisting and then leave me free to have 2 quickbars worth of keystrokes untouched.

Ctrl
Shift
Rctrl
Rshift

There's 4 FTL mods without using ALT.

And I use shift for my second quickbar, which was where I think I break down.

I think to make it work I'll have to retrain myself to relocate one of the two modifiers I use to something else, or go focus based, which isn't the end of the world.