With a 105" blade it sounds like you are talking about a cast iron 14" saw with a riser block in place(?). I would use a 1/2" blade and the discussions about which one is best are myriad. I have a 17" saw which will run 3/4" blades at tension. I have re-sawn with 1/2", 5/8" and 3/4" blades and notice no particular difference in performance based on width. I do notice better, smoother performance with variable tooth count blades; 2-3 TPI or 3-4 TPI. There are good arguments for carbide blades but, mizxed opinion on running them on the smaller 14" wheels.
I run Timberwolf and Woodslicer steel blades. These do not last as long as carbide but, I have been running the current Woodslicer 1/2" by 3-4 TPI and a Timberwolf 5/8" by 2-3 TPI off and on since last Thanksgiving and they show minimal signs of wear. I do swap bands for the task at hand so I suppose if you slapped almost any blade on a saw and expected it to do "everything" it would wear out sooner than if used as designed. I keep a thrasher around for rough work and primarily use the Woodslicer for slower, smoother thin kerf work where material loss is critical. The Timberwolfs serve other resawing tasks. I also have 1/4", 3/8", etc for curves and specific tasks.
Ellis, Suffolk, Highland Hardware, and others all offer decent blades. Don't try to tension something your saw isn't suited for and of course, make sure your saw is tuned like a violin and all will be well ;-)