El Cortez - downtown (lots of nice chips over the history of the casino)
Gold Spike/Western (should not be expensive to obtain them)

Sahara (comparatively not too many LEs from there and some nice older chips)
M Resort (you start the same time the casino does)

Or pick a casino and follow its history by following the building.
Hooters, San Remo, Treasury, etc.
Casuarina, Maxim, Marina
Palace Station, Bingo Palace