When I solved #125 I gave up because it became boring. I thought someone else would solve #130, but nobody did it, so after a year I started again and I spent about two months to solve #130.
Yes you can use old DPs to solve next puzzle, it helps a bit.
I will try to finish solving #135 in 2025.
What is the hardware that are you planning to use? In case of 4090, how many pieces ?
If you are bored of solving this alone, you can always create a pool so people can contribute to solve it faster. I definitely would join that!