I usually load the smoker even more than this. Try to use all available space, but if I remember correctly; This was my first Cream Cheese smoke and I was not sure if I would have trouble with the Cream cheese having a lower "melt point" than the other cheeses so I intentionally went with a lighter load in the smoker. That is why I used the Frog mat under the Cream cheese. As it turns out Cream cheese is more resistant to melting and slumping than most other cheeses that I have smoked.
You want to be careful in not letting your cheese freeze, (either in the smoker or afterwards.) Freezing will break the bond between the fat and the rest of the cheese and ruin it, more than likely.
I don't recall trying to smoke cheese below freezing but as I mentioned earlier, the tubes I use raise the smoker temp by 10 to 15 degrees. If your setup acts similarly you should be good at 30*. I have used a digital thermometer to monitor smoker temps while smoking cheese and that is how I determined that my tubes raise the temp's a known amount.
At 30* I would monitor the smoker temps just to make sure it didn't get too low.
If your high is only 30 I would proceed with caution.
My tubes burn for at least 4 hours, I do use both of them for a smoke, and I have double smoked cheese as well. (Burned the 2 tubes twice for the same batch of cheese) The double smoking works better with some cheeses than others so that is not necessarily a recommendation. (Swiss works pretty well double smoked, In my opinion. Cheddar not so much and I have had one brick of Cream cheese that dried a bit after double smoking).
Here are a couple shots of a better use of space on the smoker grates. One is before smoking and the other after. Just wanted to show a more efficient use of available space.
Even just using grocery store cheese this is about $50.00 bucks worth.
I just use zip lock bags to store the cheese for the first two week "aging / mellowing period" then vacuum bag and store in the fridge. I have stored in the vacuum bags for over a year. Just make sure you dry moisture off of the cheese before vacuum bagging for any storing over a month. I don't bother vacuum bagging if the cheese s not expected to last more than a couple weeks.
Best luck with this weekends smoking.
Good info there. I did a few things different in regards to vacuum sealing. Hope this does not hi