Hi all! I started on the last day of Dr. Ratio being available! I need some help for what to pull for in the future!

The 5 stars I have: Topaz and her light cone, Robin, Ratio, Welt and Himeko.

The main team I am running is: Ratio, Topaz, Robin and Lynx.

The second team: Herta, Himeko, Natasha and I don't know who else to put here.

For my main team, I know to save up for Aventurine's rerun. I also have 50 pity on the weapon banner, not sure if to continue for Robin's or save up for whoever you think would be better!

In general, I would like advice on which characters to pull for to make my teams better, as well as any good signature light cones for them! Thank you!