Settle on marble. You will not get lux happiness before you research, but 15% to wonders will be yours. On prince i manage to build all ancient and classic wonders except Terracotta and wall, but who cares about them. On emperor, with right timing and maybe few loads, i manage to get GL Gardens Oracle Petra\Lighthouse Mausoleum and another random wonder. With divine inspiration and holy warriors its super fun.
Bit of advise: don't exchange embassies with ai until you finish wonders. They watching you and try to squeeze and rush too.