Thanks for all of the replies very helpful
A couple more questions
I can oil the uncut work tops for as long as I want
As I need to remove the old worktops and then measure and cut the new ones I only have a limited amount of time in which to oil the cut ends and the sink cut out. what have others done in this respect?
Second when cutting out for the panel connectors I already have a range of forstner bits and a 1/4" router so would I need to get a 1/2" router and worktop jig to cut the slots? As the worktops will be butt joints I would not need a jig for the joint itself