I'd be curious as to what action your doctor might take, as your ferritin looks fine, so unless the other iron numbers are low, I don't think iron would help. The RDW will also usually be above 18 if iron is low. It's impressive that you are able to work out so much with an Hb hovering around 10.
What is more likely to help the Hb of thal minors than iron are the other vitamins and minerals required for red blood cell, RBC production. Iron is recycled in the body, so unless one is iron deficient, added iron isn't needed for RBC production. Everything else involved is. What I have heard from patient experience is that the most noticeable effects come from taking L-methylfolate and vitamin B-12 together. 2-5 mg L-methylfolate and 1000-2500 mcg of sublingual B-12. L-carnitine is also important for building RBC's and is also needed to fix nitric oxide, NO in the body. The oxidizing forces at work in thalassemia deplete NO and the effects of this become more apparent with age. I feel that thals could avoid some problems that are common as they get older by taking a daily L-carnitine supplement to increase NO production. I would suggest that you have your vitamin D level checked and also mention that D levels in thal minors should be in the 50-80 range. A minimally acceptable level around 30 is too low for thals. If your level is below 50, high doses will probably be needed to budge it. I got above 30 taking 5000 IU daily, but until I switched to a once weekly dose of 50,000 IU, I never felt right. I was told by one of the top thal doctors on earth that the weekly 50,000 IU doses were the only way they had good success raising the D level to where it should be.
Review the post at
http://www.thalassemiapatientsandfriends.com/index.php/topic,4890.0.html for more ideas about nutrition in thal minor. Nutrition and exercise are really the only way to have any affect.