Coilovers are easy to put on, removing the front standard is just a right b*itch if you don't have the necessary 'little' tool...
I would suggest you read the guide properly, take your time, get all what is needed and then start. Get soemone to help you. That would make it easier.
And be prepared for a lot of swearing...LOL
BTW, I didn't use that small tool neede, I just somehow managed to do mine with adapters/ratchet extensions