Practicing Openings vs Computer

I am learning some new openings and I would like to train the same opening over and over again vs computer so I can become familiar with the main positions and ideas. I haven't seriously studied chess in nearly 15 years and the technology has changed tremendously since I played so I'm not familiar with the current products out there.

Basically, I want a computer that I can set up a position (e.g. give it the white side of exchange French) and set the computer's USCF rating equivalent (e.g. 1700) and just play 100 games in a row. What are my options?

Thank you!

Not directly answering your question but i hope this is of some use. Computers don't play like humans so it isn't useful to practice against them - a 1700 computer will play GM standard positional chess at one point, and outright blunders at another. Leela Chess Zero is supposed to be better but I haven't tried it. Instead, I recommend looking through GM games and playing lots of classical games against other humans.

EDIT: come to think of it the computer is more likely to play GM level tactical combinations and play nonsensical anti-positional moves

Buy Fritz 16 and Megadatabase 2018 from Chessbase. It is impossible to tweak the chess engine to your desired parameters. Friendly mode is the nearest. You can set up the openings manually say to 10 moves of a popular mainline. You can force the program to play a different 10th move the next game. Fritz 16 is user friendly.