I’ve looked into the PoD and it doesn’t really seem likely for them to definitively achieve their goals. If the weather had been different, Lazare Hoche and Wolfetone could have landed in Southern Ireland successfully with French troops. I think you could also get a repeat of the Castlebar Races where you rout any British forces in the area. However, after that it will be difficult to capture the island.
The British will quickly bring their fleet together and blockade French forces, so supplies and reinforcements couldn’t get through. The French could probably gather a pretty large amount of volunteers to fight, but they’d need time to train and drill or they’d be fairly ineffective (and they were mostly armed with pikes and farm tools, so they’d need muskets) The Franco-Irish forces I think could probably capture Cork in quick succession and set up base there and attempt to arm their volunteers.
The British could not really afford to allow the French to consolidate in Ireland because that would expose the home island to the threat of invasion, I can’t really see them giving up on Ireland. They’d ship lots of troops over and destroy Hoche’s army. Hoche was a good commander by all accounts and I’ve seen him equated to Napoleon in efficacy on the battlefield, but even if he defeats one army I think he’d eventually be forced to pull an Egypt and sneak out of the country and leave his men to their fate.
The campaign was ultimately not very well thought out and you would need at least local French naval superiority for this to have a chance of success. Even if it fails though, I think that a successful landing PoD would have an interesting effect on Irish Nationalism, and perhaps the French would be more interested if Robert Emmet approaches them in 1803 for his rebellion.