I know that Saint Russell is very busy and as CJJ has said he normally responds right away, he could be on holiday, keep trying ~ having spent so much money on the head it is worth getting a Moto-Build water pump, they are twice the price of the standard one but have a brass impellor which does not rust and fall off!! the hydraulic tensioners do not need replacing (unless its missing) it is the manual ones that must be replaced with the cambelt. i assume that you are also upgrading the bottom rail, some stainless steel underfloor pipes are a good idea too (£60)
Russell normally likes wonga as well as copious amounts of tea!
There are plenty of mobile mechanics, but not many of them know the k-series and that could be a recipe for disaster.
Which head gasket and bolts? I use the Payen ones.