Stop in for a cup of coffee

Stay with the tall walls you will not regret it. Mine are 16 for the RV and the only thing I regret is not putting the translucent panels at the top to let the light in. and having the thing foam sprayed!:mad:
We had some bad luck with those panels on the goat barn. they started cracking and leaking about 3/4 years. Ended up replacing them with standard metal. Now that's been 15 years almost so maybe they've gotten better. If anything, use them in the end gables perhaps. Then if they crack, the leakage would be minimumal