Xilinx system generator model optimization

I have created the complete working model for thefollowing project..i have spartan 3E and vertex 5 kits available with me ..All that is needed is to optimize the model as it has exceeded the resource requirements of the kits. The complete project will be a camera attached to my computer...the captured image will be sent to fpga board it will perform some image processing like thinning,thresholding,and minuatae point [login to view URL] it will send the three minutae points of that image back to computer where they will be saved in a database with a username associated with it..now once i will have my data base ..i need to verify if the required person is in the database or not..i will have to take image again,processing will be done and then the minutae point will be matched with existing in the database with housdauff distance and person will be indicated .i will be requiring a gui to interact with as well for adding users ,deleting users and matching...complete algorithm and workflow required is attached. Any more alternative is also welcomed