Bosshaus,
What type of wood will you be milling? The 036 might get you by for a few logs (pine or hemlock) to see if you like using the chainsaw to produce timbers. Hardwoods you're undersized. I use an 066 with a 36" bar to break down large logs for the mill. A long log 14-24 feet in length might take a tank of fuel plus some. Have good chain sharpening skills. They are a must.In hardwoods I touch up the chain everytime I refuel when ripping logs.
Keep the eye on the end goal. If you want a frame a portable mill with an experienced sawyer can produce enough boxed heart timbers in a day for a couple of bents on your site. The alaskan mill and granberg attachement are great for making double D tie beams,cuved crooks as well as boxed heart beams. Like it was posted earlier watch others mill for a bit and ask questions. Its not rocket science but its easier to learn from others. The forestryforum.com probably covers this topic regularly (chainsaw milling).
Good luck and take photos.
Ray