Driving time on northwest

Hi,

I shall have a self-drive tour around Iceland in July.

I need to know how much time I shall need to drive:

- from Skagastrond to Isafjordur

- from Isafjordur to Brjánslækur via Latrabjarg (we'lll have to catch a ferry)

Also,is there some realy good route planner on web for Iceland, most of them I use do not have all the small places there, especially for westfjords.

Thanks in advance