Thanks for the interest! Nothing is final yet, so my answers to your questions are definitely subject to change:
1. Early access on Steam? Maybe. I really have to think about this. I see a lot of a sandbox and roguelite games go on early access, but I rarely see RPGs do it. If I do decide to go for early access, I'll make sure the main story is finished at the very least and future updates would just be additional content/quests.
2. Preorders and early builds? That's also a good option. Maybe a patreon? I'm not sure at the moment. I'm not comfortable taking money from people unless I am very confident that the project will be finished by a specific date. Though you can donate via Itch if you'd like!
3. Pricing? Tentatively, I'm thinking of $15. In Steam I can change this based on the region so it's cheaper in other countries. I think it's a reasonable price, but I'm not sure if it's too low.