Okay, addressing bouquets I suppose would be a good idea:
This bouquet of roses is simple and would fit with a more casual theme, keeping the outdoors in mind: http://www.newforestpalms.co.uk/shop/images/uploads/ivyrosepink_sml.jpg. Yours could be bigger than the bridesmaids with white roses, too.
Next...these mossy oak napkins could be mixed with plain brown and pink and white ones to stretch your budget further: http://www.greengablesgeneralstore.com/index.php?p=product&id=8&parent=8.
What about some garlands that are literally made of spanish moss and other natural materials to decorate?
Also, acorns could be placed around your candles to make them a little more "realistically natural," perhaps even with flower petals or some sort of pink with it.
Since your wedding is outdoors themed, the guests could throw birdseed or perhaps blow some sort of hunting call whistle while you leave -- bird whistles here: http://www.windycitynovelties.com/11438p/warbling-bird-whistles.html?s_cid=FRO11438
Favors could be personalized matchbooks, to kind of go with an outdoors hunting/camping theme--just put your own labels on matchbooks with like ______ + _______, the perfect match! and your date on them... those you could print mossy oak (free pics from online!) with pink writing!
Good luck and best wishes!