"I'm aware of the risks of this project, and it's not my intention to build a guided missile"
It appears that you may not be totally aware of the risks, or just do not care about your future.
Once you put guidance control hardware/software in a rocket, it becomes a missile, and categorized as a Guided Missile. Construction and/or possession of same is a federal felony in the United States, which will get you an all expenses paid (by you in the form of day labor) vacation for up to 15 years at a federally operated detention facility. you don't have to believe me, just your local branch of the ATFE.
If you want to stabilize your rocket, just set the fins to make the rocket spiral...