Get a decent sized boil kettle (e.g. Leyland's 33L Plastic Boiler), a picnic cooler mashtun, and an immersion chiller and you're set. The rest of your equipment is the same. If I remember correctly Leyland's postage for up to 30KG was about £15 which is cheaper than H&G, maybe that's changed.
Obviously you'll also need grain which you may as well include in your order to bring up to the 30KG. I guess Grape n Grain are not an option if you're outside Dublin.