Yes. You are correct on most of what you stated. One should be able to attain the Sotapanna stage for sure, and even higher stages.
Of your statements, two need some revision:
- One needs to comprehend all four Noble Truths. However, when one comprehends the First Noble Truth, one automatically comprehends the other three as well. Of course, that comprehension is at the Sotapanna stage. Full comprehension comes only at the Arahant stage.
- The same applies to the comprehension of Tilakkhana. Mostly, the anicca and dukkha nature are understood at the Sotapanna stage. Those and the ‘anatta nature’ are fully comprehended at the Arahant stage.
Yes. The concept of ‘distorted saññā‘ (‘kāma saññā‘ for us in the ‘kāma loka‘) is a critical concept in Buddha’s teachings. Grasping that will make it easier to see the ‘anicca nature.’
- You are at a good starting point!
