You probably have a lot more wood burning experience than I do but I don't agree. By next fall the wood will have seasoned 18 months and it's already turned gray.
Here's the problem ----
As I said in an earlier post, the wood you burn is MORE IMPORTANT than the stove you burn it in. You've spent a lot of time and money to investigate and install a stove, but have you spent comparable time and money to insure that your wood supply is up to snuff, meaning dry enough to burn properly?
Based on your comment above, the answer is, "no." You are guessing and supposing that 18 months will have the wood dry enough to burn properly. Intuitively, that seems reasonable, but it's really just a guess on your part.
Others are suggesting that if you are going to rely on guessing and supposing, you should guess that drying oak for three years will do the job adequately.
But the way to resolve the issue without guessing is to get and use a moisture meter so that you are measuring rather than guessing. Your guess has been contradicted by several other people who warn that you may well be wrong ----isn't the smart move to make the small investment in a moisture meter so that you will know for sure?
How would you feel if you go with your current plans but discover next winter that the wood barely burns in your new stove? If that happens, you are stuck, like too many other people with new stoves that we see here.
Furthermore, you may discover that not only do you need to have your wood supply for 2019-2020 in hand, but also for 2020-2021 and 2021-2022 as well.
These are the realities of heating with wood. Guessing and supposing are not adequate substitutes for measuring and knowing. If you were to discover, now, that your wood isn't as dry as you'd hoped, you still have a Texas summer to help dry it out, and you could find advice on how to deal with that problem now. But if you discover that next winter, you are stuck.
In short, you might be wrong. Find out now and know for sure!