I would have a go at side-chain compression on the bass track.
Make a duplicate of your kick drum track, send the duplicate to a bus that isn't running through the master bus. Put a compressor on the bass track and set its side-chain input to be the bus that the kick is sent into. Then, adjust your threshold as you wish.
Basically, this makes the bass make room for the kick drum every time it hits, and does an amazing job of highlighting both the kick and the bass