Best affordable setup for concerts?

I would say for small-medium venues.

Here’s my dilemma. I currently run with 1 camera body (Canon R8). I love this little beast. The only thing I really don’t like is the 1 sd card slot. I could invest in another R8, but again, the no dual card slot thing is kinda a bummer, and the battery life isn’t the greatest.

Ideally I think I would have my R8 & a R6 Mii, with a RF 24-70mm F2.8 and a RF 70-200mm F2.8.

I have recently fallen in love with the 24-105mm F2.8 with just 1 camera (I rent equipment), but that price tag at around $3k is killer. I really can’t afford to keep renting either especially when I’m not making a lot of income off of this.

My ultimate question is this:

~ Should I just try to save up for my dream setup OR ~ What other affordable routes could I go instead? I usually prefer RF glass because it’s all around better imo and not as heavy as EF versions.