With jazz, pop and vocals, you might be able to get away with speakers in the low 90's if your room is not too big. You'll probably have some dynamic compression on loud or complex passages but it is workable.
Ive never heard the B&Ws. The JM labs might work but the tonality might be too lean with that combo. Both of these are kinda iffy in this application.
Realistically, speakers in the range of 94-97 dB will offer more satisfaction with ones over 100dB even better.
There are a lot of speaker options both commercial and DIY. It depends on budget. So what is youir budget and can you do DIY?