Won't work, the games are signed by the console unique id which means they will not work if they are connected to a different 3ds, saves are easy to backup and transfer. But if you want to try then download a emunand backup tool which will copy the emunand partition on your sd card which you can restore on the another sd card
Copy your savefiles with JK's Save Manager. I did that for a friend who was migrating his 2DS to his new 3DS.
It was a pain in the arse because it took way too long to do so.
Also, install arm9loaderhax (a9lh) on your new 3DS. The process is much easier now, and much safer (you inject a ready made nand to the system, get your OTP, and inject your original nand back, and set up Luma3DS).