So yeah after much research I have purchased ableton Live for my PC Laptop
I ahve also purchased the novation ableton launchpad http://www.novationmusic.com/launchpad/?page=launchpad

I have a question, would you reccomend buying another controller to run along with it such as a midi keyboard?

I am making elcronic music (along the lines of APHEX TWIN/FLYINGLOTUS/FOURTET ETC)THANKS!!