you could go the quick and easy way with this: http://www.rcgroups.com/forums/showthread.php?t=548956

it looks pretty nice, and all you'll need is the parts from an AA donar. he just made a new one with an 18x4 inch wings, his AUW is 15.3 grams and his wing loading is only .63oz/sq ft, so its a nice slow flyer. i'd imagine that could easily fly in your area (i've flown a bare stock aero ace inside the main room of our house and its smaller than yours).

if you get your own equipment, you've got some options. servo's will be overkill though, as actuators will work even in one ounce models. the main thing you'll need to go slow is wing area, the more wing, the slow the speed. you can use this flight speed calculator to get a rough idea of how big of a wing you'll need to get the desired wingloading and speed for the weight you'll end up at: http://www.geocities.com/billy_stilt...planecalc.html

for these slower, lighter models, ailerons dont work as well as a normal rudder. plus, ailerons work best when there is little dihedral in the wings, and dihedral is needed for good stability when going slow and taking turns. an elevator can be nice to have, but a lot of time they arent needed, as the throttle usually does a good job of adjusting altitude. plus, getting aileron linkages to work well can be a major pain in the butt!

you can get pretty much everything from this site: http://bsdmicrorc.com if you want it semi aerobatic, thats certainly possible, but to get to the point of doing hovers and knife edges, you'll need to shell out some hard money for a brushless system to really get it going. you can get a good idea of how much thrust you can get, for how much amp draw, from this site: http://home.comcast.net/~gordon-johnson/home.htm

if you go towards the heavy side, using a JMP RX, 130mah lipo, and two 1 gram actuators, you could use the 7mm gearbox to get over a 1:1 thrust ratio if you can build the plane light enough. the equipment i just listed, including the 7mm motor and gearbox should come in at less than 15 grams. if you can build the plane to around 10 grams to get a total weight of 25 grams, you could use the blue SS motor and get a little over 29 grams of thrust. if you use that motor, you could go to the smaller atomic workshop 90mah cell and loose even more weight, but your flight times will be shorter.

nick

edit: just read your question about actuators being proportional. short answer, yes they are. any and all actuators can be proportional, it just needs to be connected to an RX that has proportional outputs. its just a coil of wire, so if the power being fed to it is controllable, the actuator will be as well.