Occult Origins does not cover how dedicated psychics are viewed in the Land of the Linnorm Kings.
Once you reach 13th-level and can add portals to your demiplane, it might not be a hard sell if the demiplane is a bountiful paradise with homes for everyone.
>Bountiful: Your demiplane gains a thriving natural ecology, with streams, ponds, waterfalls, and plants. The demiplane provides enough plant-based food (nuts, grains, fruit, fungi, and so on) to support one Medium creature for every 10-foot cube of the demiplane. The demiplane does not have any animals unless you transport them there, but the ecology can sustain itself for as long as the demiplane exists without requiring watering, gardening, pollination, and so on, and dead organic material decays and returns to the soil in the normal manner. If your demiplane has ambient light, these plants are normal, familiar surface plants; if it is a realm of twilight or darkness, these plants are fungi and other plants adapted to near-darkness or underground locations.
>Structure: Your demiplane has a specific, linked physical structure, such as a giant tree, floating castle, labyrinth, mountain, and so on. (This option exists so you can pick a theme for your plane without having to worry about the small details of determining what spells you need for every hill, hole, wall, floor, and corner).
You could even retrain away Believer's Boon once you reach 14th-level.
That said, if you would rather not do this, you would still be a perfectly competent and capable psion|warder. The benefits from your psion focused disciplines are noteworthy, and what more of your actual psionic powers?
This power, in particular, would synergize well with maneuvers and stances:
d20pfsrd.com/psionics-unleashed/psionic-powers/b/brutalize-wounds
When your maneuvers and stances cause you to dole out mountains of extra damage dice, this will be a strong debuff indeed. It will help even your fellow initiators.