Man, i am a little late to this thread also. This is my first post here but just wanted to chime in. You can do it man! I feel your pain. I was not as big as u but I was 400lbs. 2 months ago I got real tired of it being so big. I now weight 325. I feel great. I am real suprised you can ride so far, when I started I rode 1/2 mile and went home. lol. I use spray tinactin spray for the fungal stuff. I had major swelling in my legs, high blood pressure, ecx. I am off all the drugs now and hope to get down to 250 range. good luck