Brand new to the Egg any help is appreciated

Congratulations! These bums will definitely help you spend your money. Maybe you could post pictures of the accessories that you already have. Also we need to know what sort of cooking you want to do. Fast and hot for pizza? Low and slow for pulled pork? 

Welcome...
Put the temp control idea out your head until you understand and can control your cook manually.
And don’t expect miracles. There is a learning curve. Jumping in head first will just get frustrating. Any ceramic grill is awesome but not necessarily the best grill for the job. But it’s versatility is to do lots of things well is unparalleled.
An Adjustable Rig or Woo from Ceramic Grill Store is a great, high quality start.
https://ceramicgrillstore.com/collections/big-green-egg-large-accessories-by-ceramic-grill-store

Follow that link to the ceramic grill store. You can even call the number on the website and they will help you out. Strange that the stainless steel grid wasn’t in one of your boxes.

I'd recommend a few starter videos that I'm sure exist online somewhere and I'm sure will be more helpful and descriptive than anything I can usefully offer here. I strongly suggest getting a stainless grid to cook on and then try a few things before you start investing in a bunch of accessories that you may not need.

And welcome aboard! I grilled with propane most of my life and had very little charcoal experience before getting a BGE. Just understand there's a learning curve and you'll get there in no time.

Ok I would get about 5 things and get cooking. Yes you need (1) fire grate, (2) cooking grid and (3) top air flow control. For cleaning the grate, if you go SS, I would get a “billy bar” (4) which lasts forever and never loses metal bristles in your food.  You also would appreciate a grid gripper (5) or similar depending on what cooking grid you get.  Looks like you have a fire starter and you mentioned some lump charcoal. 

1. Welcome aboard!! Don't mind the tomfoolery that the inmates indulge in. Most of them mean well

2. In BGE jargon, the bottom iron plate is the grate, which covers the smaller opening at the bottom of the firebox (the bowl that holds most of the lump charcoal). The grid sits on top of the fire ring, and that's what you cook on. Both are called grates in Weber parlance, IIRC. 

3. I know its been some years since you won your egg, but you have nothing to lose by getting in touch with the mothership, and letting them know about the parts you're missing - warranty@biggreenegg.com. I emailed them recently, and got a very helpful response in less than 2 hrs. 

4. Besides the parts you're missing, your most important accessory right now is a six-pack, or some other measure of your favorite beverage. Light up some lump, set the bottom and top vents open a smidge, and see where the temp ends up. Then, replenish beverage, open the vents up a tad more, and see what happens. Rinse and repeat, until you can't stand up to refill your beverage. 

5. Other beginner accessories might include a good food thermometer (Thermapen and Javelin both have good options. Lavatools might still have their EGGHEAD discount code active, which is good for 15% off. 

Do you have the dome thermometer?  If not, I suggest adding that to your list.

@DanielTylerFL - I just found an LBGE grate in the garage. Its yours if you want it. Just PM your address. 

how big is your weber kettle?  if its the 18", the cooking grid will work fine in the egg.  The charcoal grate in an 18" kettle is 14" (hence why every weber uses a charcoal grate that is the same size as the cooking grid on the kettle just smaller), so in a pinch that could be used too.  Its bigger than what comes stock but could work until new hardware is obtained.

thermometer!  Great eye, db. If you zoom in on the pic, the dome appears to be in the hinge exactly backwards (180 degrees) and you can see the thermometer hole.