Blown Gasket? Do I take it back? :(

So, on the ride to my friends after work I started noticing a sound when the engine was under load, the same sound I thought my old plugs were making(Which have been changed). After hanging out with him I start up the car, hoping to capture the sound. After taking the video, I notice plumes of white smoke coming from the exhaust. So I take another video, trying to capture any noise around the engine, and the aftermath of the smoking exhaust. I noticed some small puddles under the cat, and upper exhaust portions. I really don't know what to do, I got the car for 4k, put about 700 into new plugs, compression test(210 all 4), MTF, oil, and a valve adjustment so far. It's been almost a month since I got the car. :o :( :dontknow:
1st:https://www.youtube.com/watch?v=KkI5...ature=youtu.be
2nd:https://www.youtube.com/watch?v=OpLk...ature=youtu.be

Blown Gasket? Do I take it back? :(