Welcome along Sam.
Am a bit biased, being a Tornado Red 3dr ED30 Owner, but go for it.
Do yourself a "must have spec" list and wait to you find the right one, will be worth the wait. Yes you will have to travel, but if your spending 10k + on your new car its no biggy, just a pain.
No problems to look for as far as generic problems with the ED30. FVWSH a must IMO or at least a full service schedule carried out by a VW indie specialised. Make sure it's had a new Camebelt/Waterpump fitted at 4 years or 60000 (which ever came first) otherwise that's another £400+.
Xenons are a good thing to have, Multi Function Steering Wheel (MFSW) etc etc tec. Pretty much everything can be retro fitted and no matter what it is there is a guide on here on how to fit it.
Once your have made 10 posts you can use the Search facility and will find topics on everything and anything you might want to know.
Then once you've got your new car, we will help you spend all your hard earned on modifying it.
Cheers.