Well you're only supposed to have a BB sized drop of thermal compound in the middle of the heatspreader. You then put your heatsink straight down on it and it will make a nice flat circle covering the CPU Die underneath the heatspreader and ensuring a good contact.
You shouldn't have thermal paste covering the entire heatspreader and if good squished out the sides onto the probe when putting it on the side or edge of the heatspreader really suggests you've got way too much on there.
I wouldn't 'worry' about the airflow, nothing to worry about. It's still a good temps, I was just merely suggesting for better airflow and cooler system temps you should just replace the fans with higher CFM rated fans.
If you don't care about noise get a tornado although lemme tell you there are freaking loud as can be.
I have 13 fans in my system and the tornado overpowers them all as far as sound goes...you can definitely hear that beast whine up so I really wouldn't suggest throwing in multiple Tornados as regular case fans although you can be assured you'd have a LOT of air movement lol