Dumbest would be purchasing a genesis-style rba as my first exposure to rebuilding. The complexity turned me away from rebuilding again for several months.
Best would be when I purchased my first Provari.
I did the same thing. My first rebuildable was a DiDalike, as they were called, at the time. Terrible genisis rba. I sat up until 3:00 or 4:00AM building the thing for the first time. But I eventually got better at using ss mesh, and owned many more genisis RBAs afterward.