I have never made or used 100% tallow soap, so cannot speak from experience on what to expect with said soap.
But I do know from experience that a longer cure always has improved any soap I have made or used.
Giving insufficiently cured soap to your guests was probably one of the issues. I would suggest you don't give your soap to guests until you have learned with your own experience and possibly use independent testers (friends, family who test your soap & give feedback) at what age the soap needs to be in order to provide the luxurious lather & bubbliness that you are seeking.
I know that we can be impatient and want our soap to be ready to use asap, but if you want happy customers, patience is really going to help you in the long run.
Also not all customers are going to want the same thing. I prefer a luxurious feeling lather. Some prefer loads of bubbles. So I'd opt for both if you can find it.
I suspect the second recipe probably has a nice luxurious feel and good bubbles after a good cure. (what is a good cure? - time will tell) I cannot say for sure, since I do not use tallow, but castor at 14% with 20% CO, seems like it should produce lots of bubbles & lather after a longer cure. I'd suggest trying it at 6 weeks, 8 weeks & still get feedback beyond 8 weeks; some soaps do better at 12 weeks and beyond, depending on the formula.
Your formula looks to be 4% SF, 28.6% Lye Concentration (2.5:1 Liquid:Lye ratio). The numbers that come up in
soapmakingfriend.com indicate a good balance of fatty acids to produce a bubbly lather. I'd really just play the waiting game and not tweak anything until you've given this recipe sufficient time to identify the optimal cure time to come into it's own. If, however, you want to try another tweak to have a 3rd recipe to compare this one to, I'd follow KiwiMoose's advice to increase the bubbles. Some folks really do like loads of bubbles.