In either plan, we will spend some time in Tel Aviv, Jerusalem and Dead Sea.
The difference is........
Plan 1 involves going from Tel Aviv to Beit Shean (stopping at Gan Hashlosha on the way for a few hours) and then on to Hamat Gader spa village hotel for 2 nights....relaxing, and touring the sea of galilee/lake area. Also the Tiberias Water and Lights show sounds fun.
Plan 2 involves going from Tel Aviv to Eilat (Forgetting gan hashlosha and hamat gader).....where we'll spend 2 nights and do the dolphin reef, a 1 hour eilat marina cruise and timna park night tour.
Plan 3: Alternatively, we could do Plan 2.....but do a day trip to Gan Hashlosha only from tel aviv. although i dont know if the time spent driving and the fuel costs are worth it....although it looks very pleasant and beautiful from the pictures.
Which plan is best?