many of the the FT mini planes come in in the 200-400g AUW range and work on the A-pack or F-pack (F-pack only for some of the bigger ones).
When you said airframe, do you mean before all the electronics? an A-pack sized electronics kit + battery will run you in the 100-150g range (for likely battery choices), putting you in the 300-350g AWU range. My FT Tiny Trainers are around 275g AUW with a 650mAh 3S lipo on an A pack, on a 2s they are a fairly calm/slow flyer, the 3s has some power left over. (this is all with a 6x3 prop)
how 'calm' your plane will be will depend on the size of your wing and how 'stable' your craft is in its design. For that Weight range, you should use the Tiny Trainer as a reference for something that is of the 'calm' proportions.