Concerning your question: I don't really know, but I can't imagine raising your amount after the campaign has ended is possible. They might use Paypal to collect some more money after July 17th, they could even still offer some tiers for that. At least that's how the Yooka-Laylee guys are doing it, if you want to have a look: https://www.kickstarter.com/projects/playtonic/yooka-laylee-a-3d-platformer-rare-vival?ref=nav_search

You are forgiven, since I love Galway

Good to see you again lad. Anyways, as far as we know, you need to have whatever amount in your bank when the Kickstarter ends. If you don't, you are given 7 days to cough up the money or your pledge gets canned.