I'd suggest you build or fashion an auxiliary infeed and outfeed table for the bandsaw first. Keep your logs 4' long or shorter. A sled makes the task easier but I milled quite a few logs on my bandsaw just by finding the flattest area on the log and placing it down on the table. Pop a line along one side and take off a slab. After that, you have a good flat side to rest on the table and resist turning while you saw it into a cant or saw NE slabs. Use the widest, coarsest-tooth blade your saw will tension adequately. For a 14" saw, that's probably a 1/2", 3-tpi blade.