Not worth getting BGS or as its called for vintage BVG to slab for you. The fact its in a BCCG slab actually lowers the value. Its probably closest to a psa 8. That makes it worth about $10US so getting it reslabbed is more expensive than just buying a psa 8. The 78 topps set it pretty easy to get in nice condition.
Any Dr J is a nice card so I'd either keep it as it is or bust it and keep it.