If you truly just want a smaller foot print than two IBC totes, a RDF or sieve would certainly do that... as well as reduce weekly (or so) maintenance of
dumping the SC. Your water looks very clear and it looks like it would be hard to improve on that.
The flow rate through your SC would in part tell you if a single Cetus would be enough. The other thing is a Cetus is going to
mechanically filter down to about 300 micron. Most RDF's seem to filter down to about 50 microns or less, as well as flow more than the sieve.
But of course that come with a bigger price tag.
I hope you'll share your build when you get moved and started with the project!