After some struggles and issues I have finally managed to blend shape the upper body. For my first attempt at this I am pretty happy with how it has turned out and feel ready to move forward onto the lower half of the model, the only issues being regarding some of the poses around the shoulder I feel aren't as good as I wish they could of have been, but because I had some troubles previously finishing it due to issues with the sculpt geometry tool, I decided to leave them where they are as they function fine with the models movements.