Sorry for the late reply, I was out of town for the weekend.
Thank you for your kind words about Sacred Fire. I like the sound of ‘an interactive rpg story’.
I am using Unity. For this type of game it was easy to pick up, great for both prototyping and production and it has such a wide reach with all the target platforms. I like that there is also room to grow with many powerful features the engine supports. But the best thing is the wealth of community build assets, tutorials and answers on the forums. The only thing artist coming to Unity tend to get stuck with is they skip the part where you actually have to learn coding. But you seem to have experience with scripting in 3d apps so you should be fine. However, recently both Unreal and Crytek offered very affordable subscription plans for their engines as well, so it might be worth checking out.
I checked out your 3d art portfolio and it’s really high quality, you seem to master a lot of different tools and techniques. I really like the ‘Countryside piece’, it has a certain nostalgic beauty to it. I am stretched a little bit thin right now, but who knows, I might take you up on your offer :)