There are a couple of threads on the classified section that are selling slingshot boards and bindings or are selling them separately. Many of them are selling for even cheaper prices.
Though you are after the response it sounds... boardersmall is selling a recoil and boots set-up for $279.
http://boardersmall.com/xcart/product.php?productid=18421&cat=602&page=1 maybe your nearby marina (or other people on line) will match it
Also, on boardersbestbuy.com they are selling the 07 drivers for 99 dollars right now, just f.y.i. the womens drivers for 07 look to be always 99 dollars on their boardersmall site.
http://boardersmall.com/xcart/product.php?productid=18447&cat=602&page=1 they might be willing to switch the driver bindings for the womens driver bindings if you prefer. cant hurt to ask right? (only the color is different between the two)
I want to say that the 138 will be an ok size for you, only because i had two co-workers (girls) who Loved riding my 142 recoil more than anything else (but i don't know their weights). The boards are so light that i personally generally find myself and others liking a larger size (when it comes to slingshot). But hold tight for a few other opinions on this from others.
good luck, you will love flex, and slingshot is the company that started the flex era
(Message edited by wakerider111 on November 21, 2008)