Just now looking at this thread I would agree that faster lenses would be preferred based on the stated objective of better indoor performance. One alternative to fast primes would be to consider an RF-EF converter and using EF 24-70 f/2.8 and EF 70-200 f/2.8. Used versions of these can be had at a relatively affordable level. With a small shoulder bag I don't think the weight would be much of an issue. IQ is also excellent.