Share 'need help with a long shelf life idea... Chocolate and oil ' meltaway ' centres .'

I have a client that wants me to replace the commercially produced chocolates she uses for her gift baskets with my handmade products. thing is, she also wants the same shelf life as the ( gasp! ) lindor truffles she currently gives out.  all my centers are ganache, whipped and piped, dipped... so that's out for a start. How about a "meltaway" ? chocolate and oil 5:1 ratio. My query is ... should…