Locally probably 3-4 years. Back in sg ball, invest in an elite u17’s comp in WA and a WA nsw cup side. In all likelihood we will also have at least one partnership on east coast and maybe nz with an established pathways club which will obviously be more developed and producing straight away.
I highly doubt you will ever see a WA NSW Cup or QLD Cup side because of the costs involved, this is why any WA side will be involved in a partnership and not go it alone.
The top players from the WA competition like Duane Butler (Fremantle Roosters), Paora Kemp (Fremantle Roosters), Kade McDonald (North Beach Sea Eagles) and Joell Irvine (Joondalup Giants) could possibly make any squad (depending on their ages) when a team is admitted.
A NRL WA team would be stupid not to try and entice local players like Josh Rogers (Broncos) and Royce Hunt (Sharks) back into the fold.
If WA goes with the Bears, current NSW Cup players like Jesse Marschke, Ben Stevanovic, Kurt De Luis, Junior Pauga and Tui Katoa would and have adapted to NRL level.
If a WA team were given two years to prepare they would have even more of a chance to perform against the regular NRL teams.