Any advice would be appreciated.

I dont know much about what you are doing, but I would not head out with a Bivy bag alone.
I would also pack a cuben tarp. Should weigh about 6 oz or so.

Sounds like you are biking the Continental Divide Trail? I am sure a few people on here have hiked it and would be able to give you more specific gear advice with regards to the conditions you will experience. my two cents:

.01 Most people's issue with a bivy is entry/exit during heavy rain. no matter how waterproof it is when shut, when you open it to get out, everything will be left unprotected. A small tarp over the head area could suffice for this. Plus you could use your bike as a support for the tarp.

Let me try to outline what I am thinking. from above, you have your ivy laid out, and the bike to the right of it at the head end. Stake left side of a small tarp (MLD has one) to the ground to the left of the ivy, and attach right side of tarp to seatpost/handlebars of bike. If you are oriented so rain is coming at the tarp side, you should be pretty well off.

.02 have you thought about how you will be attaching your gear? you list a dry bag, but thats it? spend a lot of time thinking about where you want stuff. do you need access while riding, center of gravity, mud from the tires, etc

also, as Mike would say, nix the TP! not totally needed as you have a pretty good list so far, but the freedom of not needing TP is a huge weight off of your back!

-Will

I will look into getting a tarp and experiment with setting it up on the bike.

I'm attaching the gear to my bike with bags that are designed for bikepacking by Eric at Revelatedesign.com. (I forgot to list their weight because I have them under bike weight in my excel spreadsheet.)

I have most of the gear laid out on the bike in a pretty good manner from other trips/training. Although, it seems that organization is a never ending process….

Well…. I did it. I finished in 20 days, which nabbed me an 11th place finish.

Thanks to everybody for all the advice on this thread and abroad in the forums as well.

My gear ended up being pretty light, 32 pounds including bike.

If anybody finds this thread through a google search and wants to talk bikepacking gear, feel free to send me an email.

Thanks again!

Great going Justin! Have you written a journal about your experiences? Would love to read it.

Thanks, it was quite the adventure and I learned tons about my backpacking/bikepacking setup.

I haven't started writing it up yet but I will. I did a daily (most days anyways) video journal and took some photos. I plan to do a write up day by day as I have time and mental energy (It's still kinda hard to relive at this point). Check out beyondthebadge.blogspot.com in the coming weeks for the full story!

+1 on the cuben tarp. I would not try that without a tarp especially with a down bag.
You will need about 3 oz of stakes and cordage so figure 9oz total.

You can do a cuben/m55 bivy to go with the tarp that weighs about 5 oz.

Sounds like fun except for the 14 hours per day.