Hello from Germany
Hi Henry,
a warm welcome on this forum. You have come to the right place when it comes to IWC for sure.
As many others stated, the Mark XVI is a great start. I started with a Mark XV in 2001 with more than double of your age. I was interested in watches for quite a long time before but not very informed and I didn't have the funds before to buy a high class watch.
So enjoy your stay here on the forum, take care not to spend all your college funds on watches and let us know when you got it. Have you considered the Spitfire Mark XVI? It wasn't available at the time when I bought my Mark XV but if I'd start again today, I would consider the Spitfire Mark XVI very well - a beautiful watch.
Whatever it will be, show your pics as soon as possible to us. And now have fun to choose and buy. ;-)
Tilo