The name tag shows the wholesale propagator is Isle, they are pretty good at picking cultivars that will grow, maybe not fast, but this clone is probably more disease resistant at low elevation than most seedlings. This one will at least have a chance at surviving long term at low elevation.
To improve the graft union, you need to plan to have the trunk double in diameter. As trunk diameter increases, the graft should heal, hopefully becoming less noticeable. This means letting it grow, as others have said, a decade or so.
While it is growing out, you need to keep the branches in the first 2 whorls compact with needles, and their associated needle buds for future branches, alive. Prune or wire higher branches so that they do not shade out the first couple whorls of branches.
Eventually one of the branches in the first whorl will likely be the whole finished tree, you can actually do much of the wiring to shape of the tree while the top is thickening the trunk.