Yes, you probably want Lede, not OpenWRT or dd-wrt. I used lede to flash some old routers last year, and on the whole the experience was similar to my last interaction with OpenWRT only better (more evolved).
I would like to add that you can usually in place upgrade from OpenWRT to LEDE. Though making a config backup and a backup of the list of additional packages you installed is highly recommended. Beside of that just flash and reinstall all additional packages.
https://lede-project.org/start