Well, if it walks like a duck and quacks like a duck, I call it a duck. LOL So, in view of your diagnosis of Hashimoto's Thyroiditis, and your symptoms, many of which are clearly hypo, I'd say that you are hypo, even though your test results don't quite yet reflect the level of symptoms you are having. But Hashi's patients often start having symptoms before their blood test results clearly show the problem. So, I think I would ask to start on a low dosage of thyroid med, and increase as necessary to relieve symptoms. Since your Free T3 level is even higher in its range than Free T4, I would suggest starting on a T4 med.
Also, next time you are there for tests, I'd suggest that you test for Vitamin D, B12 and ferritin. Hypo patients often find they are too low in the ranges for those as well.
I never suffered tongue discomfort from hypothyroidism (although this is a possible symptom of hypothyroidism) but i've had your other symptoms and many more.
I've done a bit of research and tongue changes and the scalloping are common thyroid symptoms; however, apparently, most doctors don't know this. I actually researched this because of my sister whose tongue was swollen, and she had a deep crease down the middle of it, along with a white coating. I've believed her to be hypothyroid for many years, but her tests (TSH) keep coming back "normal". I've told her repeatedly that she needs to get the FT3 and FT4 tests, but if she did, she didn't tell me. She also has leukemia and has been undergoing chemo for a while.
http://www.newsmax.com/FastFeatures/thyroid-symptoms-problems-cancer/2011/07/20/id/404163
This article also contains a video by Dr David Brownstein, that's worth watching.