I’m looking at getting either the 1222 vs 1242 for livescope, so my question is I know that the 1242 has the lake vu while the 1222 has the worldwide base map, I’m thinking later on I may want to put a garmin force on my boat, would I be able to add a map card like Navionics to the 1222 later if I wanted to have contour maps? TIA