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I decided to work with size 10 thread, get a bit more coverage and used a simple pattern
1st round
R 2 p 2 p 2 p 2 p 2 p 2 cl
(picots are joined on second picot to second to last picot from previous ring)
rw
CH 3 p 3 p 3 p 3 repeat 9x
R 2 p 2 p 2 p 2 p 2 p 2 cl
rw
CH 5 p 3 J 3 p 5 repeat 9x
(Join is to middle picot of previous round)
Working with odd numbers makes it easier to make patterns or work with beads should you wish to add them. Working with even numbers of rings will make it very simple to run one single line around as this one is.