adjust existing xcode project

hello, i have an existing xcode project the is using 1 sprite file. i want this app to use multiple sprite files instead of 1. each animation should have 1 sprite file. there are about 10 animation (each with a few images) so in the end the code will have seperate png files and seperate (for each animation) sprite files. the background, play button and pause button will be seperate png files, all others will be sprite file. i will provide you - the code - the images in png format (all the seperate images) wich have to be integrated in the code. Please inform me with a timeframe and a bid. For more info, please ask all the best