At Full throttle, no flaperons, I try to get the nose just barely off the tarmac and level at 25 to 30 kts and hold it there just a teensy amount of back pressure, then rotate at 55 kts, climb out very slowly to 10 ft above tarmac, while still in ground effect until airspeed gets to 75 kts at 10 ft AGL, then touch the stick back gently and hold 75 kts on climb out and crosswind to the downwind, until 1000 AGL. I try to trim the plane quickly at a 75 kt climb out rate so minimal stick pressure is needed to maintain. The prop seems to "bite" and hold climb rate much better, once 70 to 75 Kts are made. You can, of course, climb out at 65 kts, at Vx but you are much closer to stall speed when doing so, much less margin for error due to pressure on the stick.
If you get the front wheel off the tarmac, it seems then you steer with the rudder, not the brakes, and the plane will reach rotation speed much faster, not dealing with friction from spinning up the front wheel, IMHO.
The big mistake I made while learning was holding the whole grip stick in the palm of my hand... I now just use two fingers and my thumb, and it makes the plane much better behaved since I've started doing it just with finger tips. Less over correction or over reaction. The RV-12 is sporty, requires just your thought, almost, for input to get the desired results.
Best suggestion I can recommend is have someone demonstrate it to you, in your plane, then you emulate them. It's a modified grass or short field take off technique that works very well on paved runways too. Also doesn't beat up the nose gear if the runway is a little bit rough or undulating.