I'd try it both ways and find out what works best for you.
For me I'd wait and have carbs with dinner.
These will help
http://i1050.photobucket.com/albums/...ps9m7q64sp.png
http://i1050.photobucket.com/albums/...psoelyr9qx.png
http://i1050.photobucket.com/albums/...pspck16rbp.png
http://i1050.photobucket.com/albums/...pshij13eko.png