You need to remove the paint on the areas where you plan to glue any attachments. Hypalon and PVC then need to be keyed (roughen surface, de-grease).
Not sure how you remove the paint, but suspect you're going to have sand it rather than use chemicals. You can use masking tape to ensure clean edges. That said, it it's painted, you could repaint tubes afterwards for a tidy finish.
This isn't the best time for gluing given humidity in the air, unless you have a heated workshop with plenty ventilation. Check out Polymarine's site for gluing details and supplies.
Is that with or without VAT?