Why not go with Matic? Pretty much the same shit as BSC, but you can access OpenSea.

Also, having an offchain/onchain bridge is a disaster w8ing to happen. It would require only so much for someone to create an infinite amount of tokens offchain, bridge it and nuke the market. I have firsthand experienced this so many times. Be extremely careful with that. There definitely are some workarounds and how to mitigate this issue given enough thought.

Also, is there any place like telegram or discord where we could follow your project?