I'm looking at buying the new Shimano 105 5800 equipment for my bike. It is a 2010 Specialized Allez (Sport Triple) and still has its basic Sora components that it came with. I asked my local bike shop how much it would cost to buy & fit (6400 sek, ~€700 of which roughly $50 was the labour). Looking online, Wiggle sells the groupset at ~€400, and Chainreactioncycles at ~€450. If I can equip myself with the right tools for significantly less than the €300 saving it makes sense for me to DIY.
What tools will I need to buy to be able to completely overhaul?
What other tools are recommended to make it easier? (e.g. cable crimpers are better than regular pliers..)