A very strong second on post #2. Give us more information on the Ultralight. Have you flown the UL? If it is flyable and with your prior experience you should be able to get an hour of two in the C 152 and then use the UL to practice for 2 to three hours. Much better skill building than any desk top simulator for basic flight training.

Simulators are best for advance flight training and things that are just too dangerous or expensive in the real thing.