Lookin for some raid helpFollow

I am searching for some suggestions for nice raid locations. First lemme tell you all about my guild. We have had some successful raids in the past, but these have been mainly lower level areas such a Hollowshade moor war, Kaesora, ToFS and yes even had to get old Ganeral in Unrest. We did these so that we could get some experience raiding under our belt before we tackled something alittle tougher. Our raid leader is a 57 sk who knows what he is doing, but it reticent to plan a tougher without some sort of direction. Our highest level members are a 60 ranger (me), 63 necro, 59 chanter, 56 cleric, 55 cleric, 52 ranger, 52 druid and a 51 pally. These guys will all be involved in our next raid. What we are lookin for is something we could include our 40+ members on, we would fill at least 2 full groups with a wide variety of characters from 40-50. None of us are very close to finishing our epics so what we are looking for is something challenging with some nice drops. I know there are probably several available options, so to help narrow it down abit, we are lacking a high enough mage to CoH, so traversing high level zones on route to a raid location ie crossing ME to raid UP would present some difficulty. Thank you for any suggestions you may have.