Congrats! They are Great!
Congrats! I love Haflingers. Please excuse me for being biased though, because we have 2 perfect little ponies that are Haflingers.
Basically, they originated in Austria where people bred the hardy mountain horses to be used to ride, drive, and plow through the Austrian Alps. They were bred for easy keeping and surefootedness, as they were raised in the mountains, let loose to forage for themselves a lot of the time. But they were also bred for their beautiful flaxen chestnut color, which all purebred Haflingers have today, in varying shades. In the 1800's, the local mountain mares were bred with a half-Arabian stallion, and the resulting small horse inherited the good characteristics of both breeds. They are strong and tough and loyal, but they are also fast, athletic, and have lots of endurance.
One of our Haflingers was actually imported from Austria as a 3 year old and we bought her after being a broodmare for 10 years. She is just amazing. We can drive her in the wagon, then go herd cows, then jump a showjumping course and win. She is 26 now and still just as good as ever, and when she was 22, she competed in a 25 mile endurance ride, and got a way better P&R than my mom's QH/Paint.
The good:They are very kind horses, and can be amazing kids horses. But they can also be great for high-level horses of every imaginable discipline. There is seriously not one thing that a well-bred Haflinger can do (excluding breed-only things, like TWH shows, obviously). One lady we met won a 100-mile endurance ride on her Haflinger, and the highest one jumped was over 5 feet, and I believe that horse was only 13-14 hands tall. They are very surefooted, and have feet so tough they can climb a mountain barefoot. Also, Troya (the Austrian-bred one) turns into a Yeti in winter. I measured one of her chin hairs last winter at over 4 inches long.
The bad: They Can be stubborn spoiled brats. They can be, and usually are, VERY independent, and won't just blindly follow you unless you give them a reason. Also, so many people buy them because they hear they are great family horses, and they can be, but you CANNOT let them walk all over you. You have to make sure you MAKE them respect your space, or else they will just run you over with their 1000 lbs of Haflinger. Also, this is probably just my horse, but Tiara is a picky brat. I didn't make her that way, she just is. She refuses to eat beat pulp unless it is out of my hand, and don't even think about braiding her forlock. She will toss her head and try to rub the braid out on any hard object, including people and sharp point, and will not pay attention to anything else she is doing until her hair is freed! She's the same way with fly fringes, but only on some days, others she's fine with them. She is also very vain. She loves tossing her hair all over the place.
And beware. Some people nowadays are breeding "Haflinger sport-horses", many of which are basically just palomino Arabians.
They can carry a full-grown man too. Even though they are pony-sized, they are always called horses because they have the strength and build of a horse, and they (mostly) don't have the pony mischievousness. They are basically stocky horses, just a little smaller. Troya is only 13.1, but she can very easily carry my 160ish lbs dad.
But anyways, there you go. Enjoy your Haflinger! I love mine. Tiara is like my dream horse. We are starting eventing this fall, and according to my instructor, Haffies are actually pretty popular in low-level eventing! And just a warning; a common saying in the Haflinger world is this: Haflingers are like potato chips. You can't have just one!