It's okay to consider Deccie Dalton as a goalkeeper option but he hasn't played there for 5 years and the real question that has to asked is does he want to play there himself. When Hoggy eventually goes Dalton should be the freetaker but Alan Connolly and Darragh Flynn are other serious options for the future.
I would not rule out Patrick Collins and believe him to be a good 'keeper, I believe him to be a victim of various managements obsessed with youth but forgetting that these guys hadn't won at underage and required some coaching. It's different going with young players who are good enough but have AI U-20 medals. It was the opposite with Martin Coleman taking over from Donal Og as he was too old starting off in the league final of 2012 and had been hanging around too long to get his chance. Cathal Hickey, Kieran Walsh and Gavin Connolly are all very good 'keepers and may give a 1-2 year commitment if approached by Pat Ryan and his selectors.