Perforated drain pipe question

I am building a retaining wall with a drain tile system behind it. I picked up the drain tile from menards. My questions is, are these perforations really large enough for water to effectively enter the pipe? Should they be enlargend? Maybe poke some holes with a 1/4" drill bit?

My thought is that the water will easily by-pass the perforations and just travel down to the bottom of my rock bed and eventually into my compacted gravel base and possibly disturb the base. That seems to be the path of least resistance for the water before it would ever seep into the small slits in the pipe... Or am I missing something??

I just want this done right the first time!