I think you should have a crack at making the maps and we can help you to get them to a point your happy with. You seem to have a clear idea of what...
I suspect that your biggest impediment for your project will be finding suitable assets. I'm moderately familiar with CC3+ and you asked about it, so...
If you have questions about what's available in CC3+, try asking at the ProFantasy forum at https://forum.profantasy.com for what's usually a pretty...