Pentax K5 is currently matching the next lens (I am Xiaobai), and I hope experts can provide advice.

First of all, I think there is something wrong with the indoor lens you chose. After all, the aperture of DA40 is not big enough. Even if you want to choose DA40, don't choose Limited. Instead, you should choose XS potato chips, the price is half cheaper, the image quality is exactly the same, and XS is still a circular aperture.

Let me change the configuration for you:

The original factory 17-70 is really expensive. I think you might as well change it to Sima's 17-70, and the price can be saved by about1k. The performance of 17-70 of Sima II is still very good. 17 end aperture F2.8, 70 end has macro function.

For your indoor still life and portrait shooting, I suggest you make several choices: big princess FA43 is the first choice, and the money saved from the last shooting can be used here; To take a step back, we can consider the small cup *55, which means the focal length is longer. If the house is small, it may not be displayed, but you can get a large aperture of 1.4, or it is more economical to choose FA50F 1.4. DA40 is not recommended. It's not that this lens is not good, but that there is a better choice. DA35F2.8Marco is much more practical than 40. This is also an option if you don't mind the aperture.

Other questions:

1, Second Princess is undoubtedly a good start. To take a step back, you can choose DA70 to save half the money, and further consider DA50- 135, which is more convenient. Since this is the future choice, you might as well decide whether to use fixed focus or zoom after you are familiar with a certain configuration combination.

2, this is no problem, just choose a few big dealers. Regarding TB, Nanjing Hu Axiang, V Vision, Digital Store and Binzi SLR are recommended. These are all very good and reassuring;

3, this idea is good, the above has been answered, so I won't go into details.