I did like you, are read that increasing frequency would serve me better. I did the 5's Pro with 5x5 @ FSL. The FSL sets was done with oppisite lift than the main lift, so like this:
Squat - 5's Pro
Deadlift - FSL 5x5
The results? I sucked. I changed my thoughts and did every thing Jim wrote. Exactly like he wrote. Lastly I stopped searching for "new training tips" and so on, and limited the information I received to two experts, one being Jim Wendler ofcourse.
The results from this was, and still is, that I've never been stronger and more consistent, ever, in my life.