Firstly I tried with USM, but it kept asking for dependencies and eventually fetched more stuff than it needed, making Abiword insanely huge:

Secondly I tried going through the forums and see if someone have made them modules already (since they're common software):
Common Office Modules
The problem is that the post is from 2011 and the links were hosted on a domain that's long gone now (and outdated versions).
Then I saw some very recent community builds posted by neko here: ArchLinux packages manager for Porteus and these include a module called "04-office.xzm" which includes both Abiword/Gnumeric and is small in size:

This would be the ideal module, but it doesn't seem to work on neither Porteus 4.0 nor the Release Candidate for 5.0 (I'm assuming some dependencies they need to run were added somewhere else, probably the core.xzm that custom Porteus build is using).
So now I come to you in time of need, would anyone be so kind to create an Abiword and Gnumeric module with the least amount of dependencies they need in order to work? I'm running Porteus on a 1GB drive so every bit of space I can save is helpful, thank you in advance!