Hi Tom
My take on it, unless you are going to go into a part time job cutting up logs in your area, I would suggest to have someone come with a Woodmizer or similar band saw and have it done. Yes you could saw with a chain saw, there are setups that make it possible to do that, like the (Alaska mill), you need a big enough chain saw to handle the chain length required and you should also use a ripping chain, a very good bar or you saw sideways, keep the chain snug and sweat . Than you have to be able to set up the logs so that you can saw them, move the sawn slabs etc,. You will lose a lot more wood using a chain saw and it is a lot slower. If I had a few logs and was unable to get them to a mill, I would get someone with a saw to come and cut up the logs. A friend of mine and I hauled a dozen or so eastern white cedar logs to a sayer just Oh 14" to 18"D logs mostly 15 to 20 feet long, for building a bridge over a gully and it took not very long to slice the logs up into 2" slabs, with the 3 of us, if you have to do that by yourself it will take a lot longer and it can get risky, logs are heavy and if you are not used to doing that it's just-- well-- that, risky.
Have fun and take care Leo Van Der Loo