Production and Priority Issue for SEO and Website Usability

[Boodreaux]

I am a NOVICE .........My website is about 4 months old.  My developer/programmer only has 4-6 hours of work a week so it is going to take 4 months to finish two weeks of work. So I have to prioritize the things that are best for SEO (Our architecture is PHP,Apache and Zend) .** If you are interested I would be curious to how you would prioritize some or all of these.  Or at least as many as you can until you get bored.**

1. Optimizing Cart/Conversion - 7 hrs - (Extremely low conversion rates)
2. Optimizing Speed for usability -10+ hrs (Very slow on initial load time) 10-14 sec
3. Filling in all Titles and Metadata - 2 hrs 
4. Contact persistence with cookie...enter data only once. - 2 hrs
5. Social panels for sharing content - 3 hrs
6. Custom notifications for those who opt in. for updates - 5 hrs
7. Shorten 12 key URL's and optimize with key words - 3 hrs (I rank this very high) 
8. Install Wordpress Blog - 5-10 hrs 
9. RSS Feed - 5 hrs ( Run a feed real time on side of page) 
10. Create Content Management System for me - 20 hrs (So I can make changes) 
11. Keywords for H-1 Tags - 1 hr
12. At tag for images - 1 hr
13. Use of bold /italics - 2 hrs 
14. Canonical tag in head - 3 hrs

Any expert advice will be greatly appreciated.

Boodreaux

PS  After studying SEO for 1 month I think the priorities should be #7,#3, #2, #1, #5 (on landing pages) #11, #12,#6, #4, #13, #14, #8, #9, #10

[mosaicpro]

You're welcome. (for seomoz'ers... I've helped him privately )

[Boodreaux]

Thank your for your input Ennovation! Thank you very much.  This is great!

[mosaicpro]

I would go this way

#2

#3

#1 (TBD - optimising the  conversion rate can be due from various factors so cart may be ok...)

#11
#12 #13

#7 (this can cause a temporary drop in rankings as if you redirect existing urls to new short urls

P.S. If you can show us your website I could give you more advice upon what I will see.