160ppm nitrate suggestions?

[FitoPharmer]

I am really hesitant to do more large water changes since they are quite costly. I would rather invest in the equipment that will solve the problem permanently.

So far I have identified these issues:
No feeding mode (order controller)
No fuge / ATS (sump needs to be cleared out or marco basket in the main tank)
No skimmer (pending funds)
No filter socks/mechanical filtration(on order)
Flow is too low, 4x 1200gph maxi jets (2x Tunze Turbelle 6085 pending funds)
Light is too dim, 2x 150w 2xPC (2x 400w 4x 48w t5 pending funds)

The question is what will give the greatest bang for the buck as they say.