I know the Leapster can handle both types of games, but not sure about the l-max. Check out the Walmart clearance aisle for games, I just got 3 for $7 each.
Definitely go with the CHI, the cheaper irons can ruin her hair. The CHI guides through your hair not pulling at all, while the cheap versions will break and fry her hair.
I got my DD the So Suite from Target for xmas this year, but she's 6 and I wanted one that would be big enough for her. She looked at several different doll houses, but fell in love with this one the minute she saw it.
JCP has a special going right now that expires 12/4, 30% off regular priced items, and 10% off sale items, using code WPHUGE. I just saved $22.50 on a work bench for DS.