Well, if we're talking personal experience, I haven't managed to train with a Bishop for the last few months, meaning a majority of my 15x was basically solo training, mostly at Chief Oblivion Guards. In my case, a lack of MW19 was a big hindrance, especially for 2hitting whatever I was training on, and higher Rush let me gather more mobs and raised my chances of 2hitting at the same time.
In any case, it's cool that you got that much hp. I'm almost kicking myself for not having done so earlier when it was easier to wash, but whatever. ~19k hp is good enough for just about everything except the obvious places, and that's okay. Just saying that extensively HP washed characters are much more rare than unwashed, so it's more practical to mention builds that are more useful for the latter.
In any case, it's cool that you got that much hp. I'm almost kicking myself for not having done so earlier when it was easier to wash, but whatever. ~19k hp is good enough for just about everything except the obvious places, and that's okay. Just saying that extensively HP washed characters are much more rare than unwashed, so it's more practical to mention builds that are more useful for the latter.