All of the above is great and knowledgable advice BUT.....
Make sure that you get an accurate estimate from Jepp of ALL of their costs and then add 20% to that for your budget. Everything but everything is charged for by Jepp and one area forgotten (or assumed) could send one overbudget by 100s if not 1000s of £s.
Don't get me wrong, they give a superb, and essential service (I have used them many times around the world) and are always on the end of the phone, but it all costs and should be taken into account when planning the viability of such a trip.
Enjoy!!
Camb.