Well done Reece. That's a very good result with an army you've only started playing with.
I like the "air army" aspect of the bike list. Basically against slower armies (which is virtually everyone except Dark Eldar) you determine when and where (and if) you engage with the enemy.
I hope you had better luck with your melta than I do. Without twin-linking I usually miss.
That's the reason most of my Dreadnoughts have two twin-linked auto-cannon. Without that I'd never hit anything.
One game I played against Eldar, I failed my first three saves with my Captain, and that was while he was in the command squad so he had FNP as well. Then when the command squad charged a squad of Dire Avengers they fluffed just about everything. Only the Apothecary actually killed anything over the course of that game.
As you say though, it's great having a squad that is only there to chop things up.
If only they could climb into buildings.