What I would do:
Talk with my partner to see what they think, as they might be also affected by my decision. I would re-think the budget for the PC as 3000 EUR is a considerable amount, I would try to compromise. But if I don’t change my mind then I will plan accordingly.
I would then save “extra” when possible, so I pay the computer to myself.
35, living in Europe, I had to re-learn manual. I had only automatics in Latin America. It is certainly more fun and I feel I’m actually driving.