This list will do well at a tourney with 3 objective missions and 2 KP missions. Some good long range firepower. ~ 4 lascannons, 8 missiles and a the thunderfires 4 shots. Nothing wrong with the MM landspeeder and crew doing its thing and the plasma guns on the raz's. This is good for KP missions. You also do have some easy KP's of your own, so fairs fairs.
You have potentially 7 scoring units, good if there is a mission called milk the cows or multiple objective missions.
As you have ~ 800pts in scoring units any game which is won by the larger number of scoring VP's around a variable objective, this will be a big help. All the units in this case are mobile. Having a lot of troops is a smart move. I know because I am dumb and didn't do this.
It is a good solid list but it is no where near hard as nails. It should be competitive and that is what you want.
By the way don't tell me whether this list is for Cowcon or not as I am still hoping you are taking your sisters.
I would give it 4.8/10 (used a fancy comp scoring system)
Seeya at Cowcon with my big boots on,