No problem running the SAW/OME combo. There are several guys here that run that (Schaefer, phong and Darren off the top of my head). You won't need the spacers with the SAWs since it is adjustable. Just dial it to the height you desire. One of the big issues is the price. OME/spacer is a lot cheaper than a set of SAWs.
Check out the
Toyota SUV Suspension Lift Collaboration from ODW. The article has feedback on several different suspension setups.
If you haven't done so yet use the search function.
All sorts of good info available.