List advice please

[Capn Stoogey]

Hey guys.
I'm playing in a 1000 points a piece doubles tournament in a couple weeks and I was hoping you fine people could help me out with some advice. The Ultramarines list I'm thinking of is (roughly) this:

Cap with power sword, artificer armour and jump pack.

5 assault marines, Sgt with power sword.

Tac squad, flamer, missile launcher, Sgt has power sword.

Tac squad, melta, multi melta, Sgt has power fist.

Scout squad with combat blades, Sgt has power sword.

Land speeder storm

Mortis Contemptor with two kheres assault cannons.

I need to make it more Killy but I'm very attatched to my tac squads and scouts...
I'm thinking of dropping a tac squad but I can't decide what to put in it's place that can provide some good heavy fire support.

Any advice is greatly appreciated, cheers :)

[Mr.Pickelz]

Scout snipers are always a good choice for long range firepower. Also a Predator or small devastator squad would give you a bit more punch.