Stock data import from Spirits2000; mix'n'match discounts

My first post, so have mercy please ;)
I'm trying to import (in bulk) the stock data from Atlantic Systems Spirits2000 into ZenCart. I'm ready to purchase external software to reassign fields, but I'm looking for someone who may have dealt with the Spirits and knows the structure of their database (which databases contain what...)

Another issue, more Zencart specific, is a mix'n'match discount. I need one category (wines) to get a volume discount based on separate mixed products, not to include products from other categories (spirits, beer).

I tried the module that does totals in the basket, but that one mixes them up.
I tried the other one that is category-specific, but as far as I have found out, it doesn't include subcategories (ie everything would have to be in Wines rather than in wines->red/white etc).

Also, all the contribs seem to ignore already running specials/sales and discount on top of them. Only specials and sales know about each other.

HELP appreciated!
Thanks,
Maciej

I'm looking for someone who may have dealt with the Spirits and knows the structure of their database
What they have is immaterial, you must format it to how ZenCart expects it

Depending on what you seek, you may need a couple of 3rd party modules

easy populate or apsona are 3rd party modules that may assist

If you intend on the stock being controlled in this item your will need stock by attributes added to your install

I tried the other one that is category-specific, but as far as I have found out, it doesn't include subcategories (ie everything would have to be in Wines rather than in wines->red/white etc).
Look to adding as atributes maybe
https://www.zen-cart.com/tutorials/index.php?article=57

Mix& match discount probably can be addressed with this
https://www.zen-cart.com/tutorials/index.php?article=59