I'd deal with NCIX or Memory Express before I'd deal with TigerDirect although I have used them. NCIX has free delivery this week for orders over $1000 and Memory Express is handy if you have any problems.
Not a big fan of OCZ power supplies either.
Maybe look at this with the 8 pin Video card connection which some of the new cards require.
http://www.ncix.com/products/index.p...g&promoid=1015
Lots of other deals until Wed. Your OCZ PS is $90 and a 8800GT is $99.99 but I'd look for a 4870 instead of SLI.
http://www.ncix.com/promo/promosale....bid=xmasjuly08