You can try a DW Foamies Yak 54 Jr. It's maximum weight is just under 5oz., and with a 28" wingspan, it's perfect for any small gymn. There is a combo package that starts at $129.95, and includes your choice of 3 planes. The combo includes a Hacker A10-15S outrunner, a Mojo 10 amp BL ESC, and three 4 gram servos, that all work well. All you need is a ~400 mah 2 cell lipo pack, a GWS 8x4 prop, and a small ~10 gram receiver.
My advice to you is to put in an HS55 on the ailerons to give you a bit more authority, but it adds a bit more weight. If you're going to be strictly flying indoor, then use the 4 gram servos.
I'm not trying to sell it to you, just advising you to check it out. I've got one using ame motor, ESC, and a thunder power 480 mah 2 cell lipo, 2 HS 55 servos and a cirrus CS101 servos, and the plane flies great. Holds knife edge very well with minimal input, and hovers very well too. It will handle very light winds (nothing over 3-4 mph), but it flies the best indoors.
I absolutely love flying mine. I'm having a total blast with it, and it's the perfect all around 3D machine. Assembly also takes less than 2 hours, if you take a good ammount of time, and have everything you need right in front of you. I can get one built in under an hour, but that's becasue I've built over 15 foamies
www.dwfoamies.com is the website. There is a support forum on there too, incase you need any help, or get into some trouble with assembly.