Completely right. Didn't want to go into detail meant the anti-virus theory and why. I'll try to explain. You want to use HIV because of a few unique properties

Completely right. Didn't want to go into detail meant the anti-virus theory and why. I'll try to explain. You want to use HIV because of a few unique properties specifically the fact that you can split the gene material used in replication from the infection machinery. In addition it actual has most of the genes in place to do all the work you need since it's so well mapped and studied modifying the structure becomes much easier. My idea was to limit the insertion to only the original material (like a seedless watermelon) to remove the danger. And have virus upload the sequence needed to produce the antibodies or receptors required to target the foreign object. Then have the body kill it itself.