I think one of Williams or Rudolf should be able to progress to be a good starting prop.
At the moment I'd probably look at staring Finucane and Rudolf and use BHU as impact for Finucane (maybe like a 50/30 split), and Williams as a bit more of a solid player sharing with Rudolf (more similar time on park).
TBH I wouldn't mind a Finucane/Williams start and BHU Rudolf rotation if Williams can keep up/build on his good form from this year (and assuming he isn't **** when he starts). Rudolf and BHU would bring a lot of energy off the bench.
Then Hunt/Talakai are more of the wild card impact player. If Cam needed a break quite a few of these players can fill back into 13 easily enough for them to come on (at a loss of ball playing and overall quality).
Talakai or Jack can also go wider to edge if we identified a need to try and throw some size at someone, although Talakai better suited for this role (suggesting him on the edge as more of a matchup choice).
Fifita, Pele and likely another signing or re-signing or two become depth.
A better starting prop is still an improvement I'd be more than happy with.