Better way to spend money on accessories?

For my needs, the 6D is the way to go vs what is currently available (and I can't afford the 5DIII). Landscape, stills, copywork and astro are the main uses.

Any suggestions of a better way to spend my money here (asking on accessories)? Total of $3320. Don't want to spend more. Wouldn't mind spending less.

Already have the 50 mm f1.8, 100 mm macro, 430EX, tamrac backpack, and filters for already owned lenses.

6D + 24-105L Kit $2330 (replaces my 350D + EF-S 17-85)
Manfrotto 055CXPRO4-M0Q5 $600 (replaces my generic crappy 3-way tripod)
77mm UV Haze MRC 010M Filter $72 (for kit lens)
X-Rite i1 Display Pro / ColorChecker Passport Bundle $300 (never had a calibration system, but need one)
Lexar 16GB Professional 400x $20 (I'll likely get another with the 2% cash back on camera)

You can save some cash by not purchasing the UV haze filter.

Thanks. A little research after your posting seems to suggest that the filter isn't required to finalize the weather proofing. It is dry and dusty out here and that was the main concern.

I guess realistically, I could have simplified my post on just the tripod front since that is the only "big" variable. Is the tripod kit worth $600 or is there something else that is better at that budget, or equal for less $.
EDIT: and the $600 figure was off. Adorama just has it for too much and it can be had for $430 on amazon.

If you could wait till Christmas, I think you would see quite a bit of savings. When the 5dIII came out in May 2012, the price was @ $3,400 - $3,500. In September it dropped for a short time to under $2,800. If you can wait a few months, I think you may see some real savings. You can also sign up to be notified when the price drops below your target price by using this website. (5dMKIIIlink below with price history.)

http://www.canonpricew​atch.com …OS-5D-Mark-III-price.html

If you have to have it now, then this is also a good source for lenses, flash and memory.

Current low price of the camera is $1,699.

Good luck.