death valley trails - 200 miles, one day?

Hi there!

I'm planning to be in Death Valley around Xmas time for few days. I don't own a 4x4 yet and was hoping to rent a jeep from Farabee's in Furnace Creek to explore a bit of the park off-road (well, that is off paved roads). Their rental policy states a 200 mile limit per day.
I really wanted to drive the Titus Canyon road and get to see as much as I can of the other nice spots in the park while remaining in this 200 mile limit.
I recognize I won't be able to see everything - therefore, I'm looking for the board members' expert advice as to what trails to hit after (or even before) Titus Canyon and not exceed a 200 mile mark. I downloaded few maps from the NPS website and various other sites, but would appreciated it someone could recommend some interesting and scenic routes!

I also need to disclose that I'd like to restrict myself to easy and moderate trails.

Thanks in advance guys!