For a central metal atom surrounded by six ligands, the best way to achieve this maximum spread is by use of octahedral geometry. Your drawing should look something like Figure 1.19c, page 38, of the Brown and Foote text. Because both atoms have three attachments, both atoms are trigonal planar and sp 2 hybridized. In actuality, hybridization costs energy that is recovered to some extent by bonding. If the energy recovery is greater than the hybridization cost, then the atom uses hybrid orbitals.
Bond polarity is a function of the difference in electronegativity of the atoms that make up a bond.