A couple things to consider,
1. Native Access is the registration tool, not the installer,
and unregistered products typically allow for (generous) 30 minute sessions
before being restarted, or if a plugin, unloaded/reloaded.
A lot can be done with your Ultimate purchases in 30 minute sessions.
Kontakt only allows 15 minute sessions, probably to aid their
army of sound-library developers.
Since your installers are on a hard-disk, this may not apply to you,
but some NI products install from an iso image, and their take
on iso images, is not compatible with linux cd/dvd support, perhaps correctable
in a wine update, or maybe someone expert at iso formats knows a way,
can study, and provide a solution.
I've forgotten to try winetricks to install their iso's, that's a possibilty.
In an extreme case, one might need a windows install, and sneakernet
things from partition to partition, and maybe register by copying some registry snippets,
if one is fluent in the registry editing business.
I own Razor, Prism, and Komplete Essentials, and use the free Reaktor Player
with choice ensembles, and love NI products. Massive works very well, as do most of
their older apps. Hope you get into using 'Form',
it get's only rave reviews. (you lucky dog, you!