To be honest, I really like Flash, but the process of learning it truly hard (I tried asking for my boyfriend's help, he said it takes years to really understand it) especially for me who is a self-learner and self-taught. I couldn't find anyone who can help me, and no matter how many tutorials I found, it's a lot easier if there's an actual someone to help you.
I originally wanted to make VN in Flash, but gave up since I couldn't even understand how to get the animations to move. Dx I tried finding a way to make a VN, played some couples of free VNs to fully understand, then I found Ren'Py.
Though I'm still learning Flash to make those OP sequences.
But I'll say, no matter where you make you VN, I'll still play it! I think it's a good idea, and I'm sure you're able to find help even in here. Good luck with you VN as well!
That was so scary xD