which is why i mention , purely my pov. I'm also on 7D now. if u really want more range, equip with 2 body. thats how i work when i was shooting wedding. but i dont go for longer than 70mm on 5D.
1 body with 35mm
1 body with 24-70
so its up to ur shooting style. too bad there's no good lens from wide to longer. well. it will be heavy for sure if any. look at 70-200mm. or go for 24-105mm since 5D Mk3 ISO is so good.
if i'm still doing freelance, no 2nd thought, i will go for 5D MK3 for sure since i can cover it back. but for hobby.. its a different story.
dont get me wrong that getting 5D Mk3 just for hobby is a waste of money. as mention, different ppl , different POV , different lifestyle. what works for me might not works for u, Vice versa. some have other commitment, some dont have.
most important thing is u r happy with it~