purchasing a 2005 acura RL.. Help?

Hi, im pretty new to cars and im planning to buy my frist car, this 2005 Acura RL 3.5 with 112k miles with the price of $12,991.
i checked the carfax and there seem to be no accidents and it was regularly maintenance.

i was just wondering if this is a good purchase and how long will its engine last me to (like 250k miles?) if i keep it in good maintenance.

thanks!