Thank you, Mark for all the advice! I would rent the 7d for sure but it does take an additional $29 in shipping just for the camera so the camera and two cards would be $135.50 and $10/hr. to my assistant. So if they only want me for 5 hours, I would walk away with $140 before deducting the cost of the reflectors I buy. To be honest, I didn't realize this until I just typed it!

Well, I am still waiting for an email or call back from her. I am planning to at least meet with them & discuss their expectations and my limited capabilities in detail and take it from there. I think I have jumped too far ahead into planning the main event without full knowledge of what the main event (for me) will consist of.

There is a few pluses to this that are a blessing for me as a beginner. It is not in a church and then in a reception hall. It all takes place in the same house 5 mins from my house, 5 mins from the outdoor photo shoot. Less travel and less time wasted on traveling, also less carting of gear.

I get the impression they are on a very tight budget and will not want the whole 9 yards from me. She already said they wouldn't want pre-ceremony photos.
There are plenty of other photographers they could choose from if they wanted more than what I will be able to deliver. They know I am inexperienced and they know I will be shooting alone but that I will deliver the best possible results that I can.

If they still want to move forward, I will want to set up a session with them at the place if possible for some "free of charge" practice run shots and also by the lake one hour before sunset which is the approximate time we would be there on the big day.

I am going to try and get by with my 7d and a rented 7d (my sigmas are only for crop sensor cameras) and the two rented 8gb cards. I will bring the 17-50mm, 50-150mm, 105mm macro. My Sigmas have been ok for my use so I am somewhat nervous of putting 100% confidence in them.

I am going to go with one tripod and the two flashes I have one directly on camera and the other on the flash bracket. I'll use my sto-fen and possibly the on-camera soft-box. If worse comes to worse, I will have the one light stand and softbox in the car if I end up needing them.

I am thinking of bringing the flex arm and super clamp for more direction lighting of the rings and flowers, I can always attach it to the tripod leg. Thoughts?

I am thinking I will buy handheld reflectors in case I need them.

My assistant has also said she will be my second shooter but just if she's set up off to the side somewhere using the tripod and catching any miscellaneous shots during the reception. So I will give her the 50-150mm and let her shoot away if I don't need her with me.

I'll go with my two camera batteries and charger and just charge up one as needed (if needed). The second camera won't even be getting turned on until the reception. The rental comes with a batter also. That should be plenty!