My homemade Jimmy smoker is similar and it runs fine w/out the IQ even though i've tried it just to try it. My advice is unless you're doing overnight cooks don't even bother....even if you have to run errands on a Saturday just adjust your vents and go about your business.
Now if you 're doing all night cooks the IQ will manage your fire just fine.
If you think this post is stupid dumb lame or I talk too much then don't read it...Don't have anything good to say then say NOTHING.
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Rotisserie/Grill/Smoker Hybrid and offset! ... plus warmer