Issues I am having

Hello everyone, I haven't been on in a long time. I was hoping for some help. I picked up a 2013 JKU Rubicon in late 2016. This replaced my 2002 TJ X that I flipped. The JKU is still stock with the exception to the stereo that was changed out by a previous owner. The problems that I have ran into that I am hoping to fix myself are.

A leak that is showing up by the drivers left foot at the bottom of the door. And the same thing by the passengers right foot. Is this a hard top leaking issue, or a door seal issue?

My rear defroster where it is soldered to the window has cracked therefore does not work. Is this something that I can just resolder?

I am at 85000 miles. I have only changed the oil since I bought it. She has been my daily driver. What maintenance do I need to do/catch-up on?

 

Have someone simulate a rain shower not monsoon while you observe for water entry. HD sells foam seals that could close up the gaps sufficiently.
There might be a rear defroster repair kit that basically repairs the connection
Probably a good idea to do some preventative maintenance: air filter, PS fluid, brake fluid, trans fluid and axles ETC