At 3rd, your read on whether you are facing possible slow played Qs or agressively bet 8s will help in determining the chances of making a str8 and also your position wrt overcards. This decision would be much easier if you were facing the BI only. Even under the right circumstances, calling the completion seems expensive.

I think 4th st raise is a little too aggressive. But it's good to do so once in a while. The straight is very live and Villains may have bricked. And then next big hand will be less readable.

I think 5th is fine.

I put on the brakes at 6th. At 4th, Seat 6 might have bricked on a 3-flush but decided to continue because of the very live spades.

I think river is fine.