Number of Implants to Support Lower Denture: 4 or 2?

Had all my uppers pulled out when I was 32 and only had 1 molar on the lower right and 7 teeth in the lower front. How stable will the lower denture be if supported with 2 or 4 locator implants?

Locators are one that’s been recommended to me and the surgeon has stated maximum 4 dental implants. A dentist on the other side of the state, however, told me that with 2 implants there’s “some movement but not much” of the lower denture . May I ask you all is it possible for a person to eat a ham and cheese sub sandwich with this lower implant-supported denture and regular upper denture? I’ve been able to do that for the past 25 years or so with the few teeth and upper denture I mentioned although it had to be a tender sandwich and not compacted down. Will there be a big improvement with this new set up?

Thank you. I’ve been waiting a long time to do this.