Wow, the boss beat me to it, oh well. Since I see a budding speed freak I can still post the invite. I invite you to join the Waagh. Just go to THIS LINK
and post a reply that you would like to join.
Now on to your list. A biker boss and a big mek with KFF are great starts. I suggest that if you are going to go bike heavy that you convert your biker boss to be Wazdakka, just add some bigger guns to the bike and put a flaming skull somewhere on the bike (read the fluff) and presto; Wazdakka. He will be essential to making your biker squads troops so you can at least score an objective, other wise you will have to rely on tabling your opponent every game to get the win (a lot harder than it sounds
Like OD said get the stuff you need to bring your biker squad to full strength, he suggested 10 I suggest the full 12 with one being the nob with boss pole a power klaw. Do not pay for other upgrades as they won't use them. This will be your main shooty unit as 12 twin link deff guns can put out a lot of fire, and when you overwatch the same applies.
Two units of boys in trucks to be able to take objectives is a good start, With a unit or two of bikers, two units of trucks and a deff dread, you will soon find yourself with a full force org of troop choices.
One unit that is really great in this edition is the burna boys. Have your big mek with KFF ride with them in a battle wagon, and make sure to give him a burna and boss pole as well. You will really find that the burna boys in a battle wagon are a fantastic great unit. You can read The Burna Boy Tactica
As for tank bustas, I have found that mine are a great anti air asset, a full squad of 15 even firing snap shots will still perform very well and clear the board of flyers. Use your converted looted wagon as a battle wagon and add four rockit launchers to the front so the BW can shoot down flyers as well. Not to mention that against nids they are great monstrous creature killers.
Convert your nobs into Flash Gitz, and give them a pain boy. I always use more shooty and more dakka upgrades as they really make a difference. The blastier upgrade will mean you cause more wounds to your own unit than you do against the enemy, so I suggest not using that upgrade. As for the Captain Badrukk, he costs as much as a BW but he does have a boss pole and he will hit something at least once during the game. His super snazz gun is strong enough to shoot down most skimmers and flyers, but he needs to hit first. I suggest only using him in bigger point games if you are limited on models. I also suggest a looted aegis defense line for them, as this will make them infinitely more survivable.
If you decide to go with nob bikers make sure to take the waagh banna and give at least one a boss pole. I equip mine with 8 big choppas and one PK, and a pain boy giving cybork to all. You can buy grenades if you have the spare points. This is one of the hardest units in the ork army, and pricey too (both as points and dollars).
Alas, I do digress, now we are getting you into the 2k range of army and you only want to be at 1k, so just hold off on the nob bikers until you are fully addicted.
Now, I must also go in search of coffee, I can see the pot is done brewing. I hope all that makes sense, if not, I will try again later.