“understanding dual aspect monism”

My overall hunch is that it is closest to Taoism. There you have Yin-Yang that is Tao while one must always keep in mind that Tao that can be spoken of is not the enduring and unchanging Tao.

“universe is consciousness […] this would put you solidly in the idealist camp. […] Is the 'objective' world of mass and matter an illusion”

Basically, but also only partly. To quote Ramana Maharshi, “The world is illusory. Only Brahman is real. Brahman is the world.” Brahman is existence-consciousness-bliss (or reality, knowledge, and infinity). At the same time, Brahman cannot be adequately named (thus it's more accurate to describe Brahman in terms of who or what it is not). And you could safely replace Brahman with Tao, or God (in some places literally referred to as “The Name”) for that matter.

In any case, if I should really characterize myself, I would say that I'm mostly influenced by society soaked in dialectical materialism and a huge painting of Jesus praying in an empty moonlit subtropical garden, which was hanging above a small brass low-relief of da Vinci's Last Supper on the wall of my grandparent's bedroom.