If your going to fly the micro's, weight is a huge issue.
This is a modified LB frame( took the plastic junk off the motors) with 5.8 ghz FPV and a 380mah battery. It weighs 44.2 grams. That's still too heavy but about the best I can do without designing a dedicated camera transmitter. You have to save every gram of weight to make it fly correctly. I could save a gram if I took off the large wide angle lense but I prefer it for indoor's.
It is only 4.2 grams heavier than a stock M4v2.
I saw a post a while back from benidikt the motor guy and he had it pretty much nailed. A 5 gram frame is wow!!, 10 grams ok and 15 grams not so good for 7mm motors.