Shooting my mom’s birthday party tomorrow (not a pro) – need help picking 2 lenses!

Hey everyone,

I’ve been asked to be the "photographer" for my mom’s birthday party tomorrow. I’m definitely not a pro—my usual subjects are just my two cats!
Here are the details:
Location: House with a big garden.
Weather: Sunny, but there will definitely be indoor photos too.
Vibe: Casual BBQ party.
I’m trying to decide which two lenses to bring. Here is my current selection:

1. Sigma 18-50mm f/2.8
2. Viltrox 27mm f/1.2
3. Viltrox 56mm f/1.7
4. Viltrox 75mm f/1.2
   My current plan is to take the Sigma 18-50mm f/2.8 and the Viltrox 75mm f/1.2.
   I assume some guests will want nice portrait shots, and I figure the Sigma is probably my best bet for group photos and maybe indoor shots, right?
   What do you think? Would you stick with this combo or swap one out?
   Thanks in advance!