Awesome to hear that you like it so much! <3
I think you cannot train an own model.ckpt on consumer hardware. :( And it needs about 40k images with labels. But there are two things I might add.
A) Embeddings. You can find those in the documentation for invokeai. Basically: Give the ai "5 images + 1 tag + 1h training on a RTX 3090ti = ai learned new word". I could create a UI for that already.
B) Dreambooth. I don't understand it yet, but it's kinda "embeddings but better", if I understood it correctly. It is not implemented in the backend yet, but it will be implemented. I'm kinda hyped for that, because it allows to create the same person in different poses. <3