to find out jewish holidays, google it. but just know that early afternoon to sunset on saturday (shabbat), most public transport stops in israel proper. however, you can travel in west bank as the muslim holy day is friday. in muslim areas, watch out for fridays, jewish areas, watch out for shabbat, christian areas watch out for sunday. but shabbat is probably the worst in terms of transport; most everything stops.
for masada and dead sea, take a bus from central bus station in west jerusalem; leave 8 or 9am. ask for bus schedule at info. booth in bus station to help you plan. go to masada first, then dead sea at ein gedi bus stop.
do not know about rosh nahikra. but the baha'i temple and gardens on mt. carmel in haifa are great. maybe that would be better than rosh nahikra. but you must make an appt. to visit the temple and gardens.
the rest of your time, jerusalem, at least 2 or 3 days, old city and mt. of olives and mt. zion and city of david. preferably 3 days in jerusalem.
no more than one day in tel aviv, and if so, visit jaffa too that day.
i recommend west bank travel to see what the palestinians endure under the israeli military occupation. at the very minimum, one day in bethlehem and hebron. go to bethlehem in the morning, hebron in afternoon, taking shared minivan from outside damascus gate of old city; watch out for shabbat or you will get stuck, as i did in 2004; do not go on shabbat. in hebron, visit old city and tomb of abraham.
akka is cool for the old city and crusader castle; one day from tel aviv or jerusalem. bus from jerusalem or bus or train from tel aviv.
take "united tour" for one day tour to sea of galilee and biblical sites and history; around $70 US dollars; book online; google it. u can leave from tel aviv or jerusalem.
if you go on your own, from tiberias, must take private taxi to churches are public transport is very infrequent.
- julie