Nanhai Trading Posts options in 15 mm?

[FifteensAway]

So, here is the guilty model:

https://www.4groundpublishing.co.uk/south-china-sea/nanhai-trading-post

What is the best option (other than scratch building, of course) for a starting point to recreate in 15 mm?

First time I've seen anything in MDF that made me feel jealous I didn't have something as an option.  Something like this would be a fantastic addition to my developing Slightly Cracked Colonials.