This might be an issue of recording quality, but I think you should make the main theme clearer when it goes to the bass. For example, bars 30-33, 38-41, 242-245 etc. Also watch out for the sforzandi in bars 34, 42 (and similarly later). They should sound much more powerful.
There are a few passages where polishing up would be recommended. Especially the jumps in bars 71-72, 305-306 (since the low note has to be clear, mistakes in this place are horribly sticking out). Also be careful around bars 240-250.
As for the tempo, it is apparently OK to vary a bit as long as it is consistent and fully conscious, i.e. you need to have a clear vision where you want to change tempi. In my opinion, the acceleration in bar 350 doesn't seem to be well grounded. (But I know the feeling of coming to the end of the piece when performing publicly. People often psychologically want to exaggerate the climax and hence the faster playing. It's just a mental thing that should be controlled.)
But I think you're on your good way with this sonata, your playing is full of expression, I actually liked it. Good luck with your auditions!