Hi,

Prices can vary tremendously between weekdays and weekends so you may not get a hotel for $100 at the weekend .

The Imperial Palace is now called the Linq ( beside the High Roller ferris wheel)

Strip options ( may or may not be at $100 per night) then you have the resort fee to take into account

TI ( Treasure Island)
MGM Grand

NYNY
Excalibur

I have stayed at the Luxor ( Tower rooms) before and they were not too bad.

The Westgate Las Vegas ( the old Las Vegas hilton ) is off strip but connected via the monorail

Death Valley is beautifu for sightseeing ( I have done several day tours with tour companies ( minibus transport with up to 15people)

Regards

TBS