Start off doing about 80 kms per day rising up to between 100 – 150 depending on wind/terrrain (although I have done 350 kms just to see I I could though).
Normally set off at seven and ride till 12 ish, eat, drink, sleep and then ride until 8ish or when I see a good bar.
Tour with a bob yak/monoporter on a hartail with slicks and a set of high rollers lashed to the back.
Would rekon on 4 to 6 weeks including rest/ half days.