That would be interesting but MS-DOS? Absolutely not.

I'm having much more fun tinkering in Linux on a 150 EUR Chinese laptop with a fairly anemic CPU.

If there's an itch for retro computing I'll just use an emulator.

The only thing I'd probably enjoy using old tech for would be stochastic super-optimization of programs i.e. to find the very best combination of machine code that executes a certain algorithm maximally fast or with minimum memory.