>carrying a bag
Honestly if you're doing anything that requires a camera bag that isn't a hike innawoods for Alex Burke type shit with a 4x5 either carry a single prime or one of these bad boys.
I have a Tamron 16-300 I use as a walkaround and I fucking LOVE it. Small compact form factor, gives me a shit ton of reach on APS-C and it's light enough to not geel it in my back at the end of the day.
The days of hyperzooms sucking was like 2005, get with the times.