Basstar

I purchased a vintage bike that when stock would have had 700c x 28 tires.

The bike I purchased is configured with 27”.

The current setup works fine but my OCD mentality is considering replacing the rims, tires, and brakes to 700 C.

Also I’m thinking the smaller diameter may make the bicycle more responsive when pedaling.

Questions:

Am I overthinking the slight diameter difference and secondly will an average rider be able to notice the difference if switched?

Should I simply put it out of my mind, save my money, and keep pedaling?

Thanks