Help with KOReader on Kindle Keyboard

Hello! I'm new here so please let me know if there is a better place or way to ask this question. :thumbsup:

I've just started using KOReader on my Kindle Keyboard Wifi. The main reason I'm using it is for file organizing (I am not registered with an Amazon account & don't want to be... So I don't think I can use collections) and highlighting (for some reason I can't see or save(?) highlights in the stock reader, just notes). So far, I like KOReader a lot but it is a bit clunky to use with the K3 buttons.

a)Is there a way to use the 5 way navigation buttons to move a cursor around like in the stock reader? This is a much faster way of selecting the text than moving around the pointer freely

b) Can I turn OFF the on screen keyboard? It keeps preventing me from using the physical keyboard.

Thanks :)