many people say that you shouldn't leave the beer on top of the yeast cake for more than 5 weeks (in the primary), so, you are at the upper limit of what they are recommending.
i say try it. after the specific gravity stops changing, you could rack to a secondary fermenter (carboy) if you are really that worried, but i wouldn't worry.
I wait 2 weeks to take a hydrometer sample for a 1st FG reading just to see how close it is. Once I get a stable FG,I give it 3-5 days to clean up & settle out more. Then bottle. That way,when it's properly conditioned & chilled for 4-5 days,it'll be as fresh as is possible. Hoppy ales in particular,you want as fresh as can be,but properly conditioned.