Re: all 7 suburi in one go?
I have practiced the suburi daily for 18 months including the furibo. I came to think that they are fundamental provided you are given the prpoer exercise/guidance. You need to understand the technique its goal and then experiment for yourself. Doing them in a flow can be interesting but it should remain a minor practice.
There is no end to suburi. You can discover things you would have never suspected. With time, your interest changes as you improve/progress but somehow you always come back to basics.