I've been working on HAB stuff for the past 3 years on and off - it has intensified more over the past year. I talk to the other members of UKHAS quite a bit on the irc channel #highaltitude. They are a very good group of people with a lot of experience and willing to share etc.

So far I've only done 1 launch (last Summer) which went very well - preparing for 2nd launch which should hopefully be within a couple of months. My site is http://habexperiments.wordpress.com however, it doesn't get updated that regularly (I really should update it more!). As well as working on the 2nd launch, I'm also putting a significant amount of effort into the idea of a "glider" or "autonomous return vehicle" that would make retrieving etc far easier and is just quite a "cool" project!

Initially I though I would code my own autopilot just simply using rudder to control (like the GPS Boomerang) however, the challenge with that approach is creating a neutrally stable glider - very difficult.

So, after a fair bit of research I've opted to use the APM2 (currently have one on order) to pilot the glider back.

Someone I know has used the APM1 (with IMU stuff) on some test missions for their glider however experienced significant failure of both pressure sensors and others - I'm hoping that this is all corrected etc in APM2. I will probably fly it on one of my balloons just to make sure it all works..

I've noticed that there are a few of us here on diydrones that are exploring similar projects and it was suggested a couple of days ago that we should perhaps start a wiki and work collaboratively to solve the problem! - Something I'm all for.

With regards to your project - have you managed to obtain CAA permission to fly the glider over here? From your display pic it looks like you've already had a mission! How did it go?