In one case you have a choice and you can consult the descriptions to see which one you like better.
Remember that a smaller magnitude number is a brighter star, if that is your preference. 65Alpha CNC would also be a good choice for Leap in 1950.

Name: 16Zeta HYA
Birthday from Jack’s initial research: Aug 3
Magnitude: 3.1
Spectrum/Star type: Orange Giant
Distance in Light Years: 150
Diameter compared to Sun: ~13x
Luminosity compared to Sun: ~65x
Date best observed: Mar 21
Additional information: Brightest star in Hydra Head, just outside of the zodiac. Zeta is the brightest star in the Hydra Head.

Name: 65Alpha CNC Acubens
Birthday from Jack’s initial research: Aug 4
Magnitude: 4.2
Spectrum/Star type: White, a 4-star system.
Distance in Light Years: 175
Diameter compared to Sun:
Luminosity compared to Sun: A & B each 23x with 2 dim Red Dwarfs much further away.
Date best observed: Mar 21
Additional information: “The Claws”. Not that bright for an “alpha” star, this group has a highly metallic member.