If you can switch some filter material over from your established tanks along with the plants, you'll be able to establish beneficial bacteria pretty quickly.
However, if you're doing fish-in, you'll need to build the bio-load VERY slowly and commit to frequent water changes until everything is up and running.
Last spring my main tank back wall shattered, leaving me needing to set up and start transferring my fish out of temporary holding pretty quickly. The new substrate got a handful of the old seeded into it and I pulled one of my eheim filter pads to shove into the HOB filters on the new tank as well as transferring over a few bits of driftwood I'd been able to keep soaking.
Bought a trio of mollies to start things off then very gradually moved fish from my backup tanks into the new one. We're talking a couple of inches of fish every 3-4 days as I was filling in with more plants and keeping up 20% daily water changes.