I would give Atlantis diving a call or email
www.atlantis-dive.de and pick yourself up an Apeks ATX100 with ATX40 octo for next to bugger all. A 1st/2nd combo was £205 delivered. IIRC adding an octo puts it up to about £250. You'll need a gauge to nail to it but I'm sure they can sort out a nice little Suunto one for you.
The website is in german and they don't do online shopping but don't let that put you off.