Sergeant Telion can't take Meltabombs. As a character, he lacks the "options" sidebar of a standard sergeant.
I'd also drop the meltabombs from the Sternguard (who already have 5, count em, 5 melta shots). With the points from the two meltabombs you'd no longer be buying, you can pick up a ML for those scouts.
I'd say drop a Vindie and pick up more transports for your Tacs. Razorbacks are nice.