So here's some sample models from Heroforge that might be a good indicator to see if they will work or not. I have to buy my custom model files, but before I do that, it might be worthwhile doing a preliminary look-over to see if it's viable. If you think these files will work, i'll go and buy the actual model for a test print. (Also let me know how much material costs will be so I can send you something for them)
https://www.heroforge.com/FAQ/#download