Just bought a Canon 5D Mark ii.. now....

Hi all.. left my T1i behind (and my four lenses) for the 5D.. comes with a 28-135mm f/3.5-5.6 IS USM but wondering what my next couple of steps will be..

Have to save up (sell more prints) for L Series glass... I shoot a lot of landscape and no portrait/weddings... perhaps a 17-40? Then a 70-300 to tide me over before L series becomes a financial reality?

Anyone have any luck with off Canon glass for this camera as well?

Thanks in advance...

Greg