Before you waste anymore money, go over the hull with a ball pein hammer with particular attention to the water line where they rust and the extreme bottom fold of the hull which gets worn away. Be particularly observant on the area just behind the rear bulkhead where the door is, the lifting stop will go there and I have seen them crush because they are thin. Give it a good thump, like you were breaking ice, if it dents or sounds dull it is paper thin and you need to sort it before you sink. It will only have been about 4 or 6 mm thick to start with and your insurance will demand that it is 4mm ALL OVER for comprehensive cover. Check the stern where the rudder hits the transom, they frequently wear through.
Has it already been overplated?
What engine? Need that information at least to assess how you can proceed.
Bilge pumps will not stop it sinking no matter how many. Once the battery is flat, down it goes.
Without being nasty I would doubt that such a boat is worth spending the transport costs to Ireland.