The following plugin is now available in WooCommerce :
https://yithemes.com/themes/plugins/yith-woocommerce-deposits-and-down-payments/
This will allow us to take deposit payments eg: 25%
The Translator HQ integration is able to support part payments against a product ,
eg : $25 against a $100 item ,
and it also removes ‘minus 1’ from stock on REX