About the blade speed -I have a three wheel machine that has 10" wheels. Here is a "rule of thumb" that works (if your wheels are different diameters then you have more math to do).
For cutting wood, the 1725 rpm motor, through pulleys is REDUCED in speed four times (ie motor pulley is 2", driven pulley is 8")
For cutting metal (same saw, different blade) the blade speed is REDUCED 30x It may take some kind of jack shaft and extra pulleys, but that works and you don't burn up metal cutting blades.
The saw I have uses a jack shaft, motor drives a v-belt to the jshaft, chain and sprockets finish the reduction to the bandsaw wheel.
Hope this helps.