You are looking for an ElevenLabs-like software at an affordable cost, and the choice you specified, like VidBeVoice, will be a good application. Since you have a lot of reference audio, trying and creating it itself is a big issue, as you will lose credits for each attempt until you achieve consistency.

Use Pixbim Voice Clone AI. This is one of the best voice cloning apps and is ideal for your requirement. It is the most affordable offline voice cloning software available now. With a one-time fee, you get unlimited voice cloning usage for a lifetime. You can use it as many times as you want, and it will work perfectly on your machine, especially since you have an RTX 3080 with 12GB VRAM, which is faster than most normal laptops. You can collate or try out all the reference audio and achieve a consistent voice cloning output better than many other tools.

I use Pixbim Voice Clone AI for my story narration, narrating books in my own voice. These narrated outputs run for several hours. I have completed more than 1000+ hours of narration with just a one-time fee. It is really meant for heavy users. I try different tones for each individual story and work on refining the voice-cloned output. If it is not consistent, I fine-tune the reference audio and recreate it. No matter how many times you try, it won’t cost you extra. It is just $59 for unlimited voice cloning usage.