Well if you need any advice just post a message. It took me 3 hours and during that time I put up a washing line, helped the Father in law on the PC and had a coffee.
The hardest part is measuring, I just put some masking tape and after I am happy I make a mark with a pilot bit. Then remove the tape and re-measure yet again. I then go through with the supplied bit, watch out as it clogs up easily.