Where is Furman university? I think this is lovely and sensitive playing.
One thing I noticed is that when the right hand has the ornamented passages, the left hand suffers. Sometimes it speeds up (it should be as steady as possible when the right hand engages in this kind of rubato) and other times it loses a good legato, and perhaps even a few notes? Push for more independence of the hands in this respect.
About the hard sound, it could be a number of things, since we can't see you. It could be the instrument, or the recording. It could be the way you are touching the keys: when playing louder octaves and chords, it can be useful to slide into the keyboard (ie fingertips going towards fallboard). It sounds to me, as if you are just coming straight down onto them.
There is also the concept of speed of attack, which for music like this, generally works better with a slower attack. It can be easier to conceptualize this than realize it literally: if you think of the sound of the octaves as blooming outwards, you will be closer to a more beautiful tone. In other words, listening to the way the note lasts rather than the attack.
Walter Ramsey