It is correct to say that by floating you may hurt accuracy. It is also true that if you expect less you will probably get it. I have seen guns floated then completely bedded to the end of the stock. Define your needs and expectations, then balance with your skills and resources.

There are a lot of things that are not as drastic rasping a stock out you can do. Different ammo, good cleaning procedures, check sight in proceedures. But right now my opinion is to follow the manufacturers or a reputable break in proceedure. VERY often new guns have rough spots that smooth as you shoot. Very often guns seem to shoot better and better as you shoot more, but the break in is important. This will take longer if your gun is stainless. Can consider lapping.

I disagree with the implication that settling for good enough is ok, unless that is really what you want. I have failed a lot in working on guns and learned from every failure, Just be safe.