I recently bought a Husky 17 gal compressor and matching HVLP gun from
HD. The gun needs somewhere between 5-6 CFM, which this compressor
supplies.

I have been spraying a lot of trim boards with it, and it is doing a
good job. Paid under $300 for both including tax.

I know there are much better setups, but this was a good first purchase
for me to start spraying.

I would be surprised if that gun ($79, I think) wouldn't work with your
existing compressor.