Remember to simulate with component tolerances. I recommend you play around with Analog Filter Wizard (
https://tools.analog.com/en/filterwizard/ ); it's easy to use and will draw the component tolerance envelope for you.
The more complex the analog filter is, the more critical the component choices become, including opamp parameters and the tolerances of the passive components; sometimes even the parasitics (such as capacitive coupling).
It may so happen that designing a simpler 2- or maybe 4-pole filter and just using an ADC with higher sample rate, to use a steeper filter in digital domain, ends up being not only more accurate, but possibly cheaper as well. The only function for the analog filter being satisfying the Nyquist criterion, you can move that further away by just sampling at higher freq, thus make the less steep transition region of a lower-pole filter acceptable. Then, in the digital domain, it's trivial to make an almost brick-wall filter, avoiding all component nonidealities.
How important the stopband attenuation is for you? I.e., do you have actual strong, disruptive signals to stop, or is it just to prevent some low-level noise from aliasing?