I don't think there is any particular order in terms of installing them as they do different complimentary things. As a practice run AO first, followed by Fidelizer Pro and PL. You also need to be careful with Fidelizer Pro and Process Lasso running at the same time, especially the core isolation part - one strategy might conflict with the other. Use one or the other, not both. The HQP4 can be spawned from the Fidelizer on boot up.
With respect to Fidelizer Pro and the Audiophile Optimizer the order of installation is important.
I have found previously that if you install Fidelizer Pro after the Audiophile Optimizer, Fidelizer Pro reactivates some services that are stopped by the Audiophile Optimizer (this was subsequently confirmed in a post on the JPLAY forum by the Fidelizer developer). This does not happen if you install Fidelizer Pro before the Audiophile Optimizer.
So I normally install Process Lasso (not as a service) first, Fidelizer Pro next (using it to start MinorityClean and Process Lasso) and then the Audiophile Optimizer. I subsequently use the service tool to change the Audiophile Optimizer GUI to a command prompt shell.
I use Fidelizer Pro to start Process Lasso with it's GUI for convenient adjustment of parameters within Process Lasso before closing the GUI and leaving the Process Lasso core engine running.
