I have some doubts you'll find anyone with specific experience. I'm sure there's a few who have set up SMS services, but those are generally two-way.
This is a lot more simple. :) I'd probably put an aggregator in, to only send out SMS messages after X minutes have passed with no messages, myself, but it all depends on how much you expect to receive. So you're going to leave a computer behind, running the XP home fileserver and this SMS forwarder, maintain the Irish cell line for the year, just for the sole purpose of forwarding SMS. Wow. :) I'd probably set up an SMS autoreply to have them use my 'new' cell number, if they really wanted to send me a message. :) Or whatever email equivalent existed for the new one. :) But to each their own addiction. :)
