Hi and welcome to the forum,
Why 6061 aluminum tubing? I ask this because you say strength after being bent wasn't important. Unless you're buying a truckload or mill run at a time... you'll have to buy off the shelf at T6 temper and it won't appreciate being bent much. If you're putting a typical conduit bend on it which is pretty generous radius you might get away with it but I wouldn't go into this counting on it. It's likely to crack if you bend it too much. I've shattered some T6 temper aluminum a time or two...
If you don't need the strength then go with a cheaper flavor aluminum?
With a better idea of what you're doing with this I... or others here might be able to help you out.
Far as bending it goes... if it is indeed T6 temper it'll bend just a little bit harder than steel of the same cross section but will have more spring back and like I said... high likelihood of cracking. You could have it drawn back to T0 and it'd move like putty but then why bother paying for alloy if you don't need the strength?
Also... more of an F.Y.I. lighter wall material requires more processing to get it thin and that runs the cost per pound up. Unless you're buying a mill run you'll need to see what's readily available before you get too carried away.