Mainstream price: more than 5000 princesses, more than 5500 yuan for two princesses, and about 8000 for three princesses. Even if you buy parallel imports, the lens will not be a big difference.
There is only one explanation for biscuits: 3 biscuit heads: DA2 1mmF3.2, DA40F2.8 and DA70mm2.4
The lens of K30 Bird can be used, but if only one princess is used (the princess with three princess heads is close to the standard lens and is the most widely used), and the focal length is a little less, the princess to be installed will go to1.7,80,000 yuan, and the K5-IIs model is too expensive for you, so you probably can't afford three princess heads.
Cookies are more realistic in price and good in quality. If you want to use a fixed focus, it is a good choice.
I tend to buy a good body (K-5IIs) first, only one head zoom, first play-learn photography, and get familiar with the camera. After improving your skills in this way, add lenses according to your own needs.