I would say the first of many after you have tried it on. Congrats mate!
I'm sure this is just going to start another addiction!
I've already got quite a few Iron Heart tees (which are some of my favorite around) and a few pairs of jeans too.
Now lets just hope I sized right on the shirt! Based on the measurements I should be good with an XL, they're a little smaller and shorter than my Gitman XL's but they all tend to fit me a bit on the big/long side.
Bummed that it's no going to be summer and I won't be able to wear it much, but nonetheless a classic.