about half the SdA decks i've built have gloin-cycling freeps. the strength of the dwarven cycling is that it doesn't sacrifice strength for cycling. it doesn't step out on risky ground. it's just a solid dwarf deck geared to cycling.
but thran is right, gandalf sort of works against your cycling strategy, granted, you probably will be placing 3 shadow cards, so maybe it's not a problem. theoretically, you could clear out the gandalf culture altogether. that would slim it down 5 cards (to 29 i think).
only other thing i fear is that if you are gaining/losing initiative, isildur is gonna bite the dust at the end of the skirmish phase if you have used gandalf to lose initiative. or the end of the fellowship phase if you have just dropped a bunch of freeps stuff.
the last problem is pippin. theoretically he can keep burdens off with
home and hearth, but that means jumping into your hand every turn. and then he has to sit there through the shadow phase. this not only works against cycling because you take cards back into hand, but also only allows a max of 7 shadow cards in hand during the shadow phase. that might be a problem.
overall you have a LOT of good cycling
-mm