"initial thought about" is a correct and usable phrase in written English.
You can use it to describe a preliminary opinion, idea, or consideration that someone has on a particular topic. For example: "My initial thought about the situation was that it was not going to be easy to resolve."
When Johnny Depp, the third point of that celebrated creative triangle, first met Burton, to discuss Edward Scissorhands, his initial thought about the director was "get some sleep".
Then there was Stewart's role in the panel, telling charmingly hilarious anecdotes, teasing Ames for cutting scenes, and confirming MacFarlane's initial thought about how absurd it is that Stewart has never starred in a single-camera sitcom.
By not assuming that your initial thought about something is truth, it allows you to consider potential alternatives that explain an appearance or behavior.
Go with your initial thought about this situation, and trust your gut feeling.
As such, I thought I'd post some initial thoughts about the machine.
What had been Heatherwick's initial thoughts about it?
During the summer, Dorsey studies games from the previous season and develops initial thoughts about teams to watch.
After a workshop with Véronique J. on first impressions, in which 10 men and women divulged their initial thoughts about one another, he recognized his problem spots.
I have not yet had time to absorb the new report and its multiple annexes in their entirety, but I have read around in it enough to offer some initial thoughts about this extraordinary historical and political document.
We get them to write blog posts with their initial thoughts about their readings, their brainstorming process for an essay, and their reflections on what has gone on in class.
I already outlined some of my initial thoughts about this year's conference yesterday — and yes, they were pretty cynical.
