Garry....
All tools required to build the jet are listed in the first couple of pages in the manual. The taps are all readily available from most hobby suppliers or machine shops.
With the high-flow retract valve, you can use lower pressure to actuate the gear for slower speeds. Just experiment with the PSI to get the effect you want.
The kit is a fairly quick build. Of course, depending on your experience level and availability of free time, it is hard to say. The 2 I built were ready for finish in about 2 months.
I did not take any pictures during the construction phase. There are so many nice pictures in the manual that it seemed a waste of time! I do have some pictures taken during the finish process, maybe they will help if I can get them to upload....