My preference is for number 4, or possibly a combination of 1 and 4. I prefer to have the boards parallel to the building with a 45 degree mitre where it turns a corner. I like to see the edge of a single board when looking at the deck from outside, rather than the ends of all the boards - just think it looks more finished.
For the same reason, and since you're having your entry points on either side of the diagonals, I'd probably be tempted to incorporated your radial design, although it is creating a lot of work. If not that, then I would put in a header board at the outside edge of each diagonal bit and butt the boards into it following your pattern in number 4.
"I don't practice what I preach because I'm not the kind of person I'm preaching to."