wrt to LPS filter, I use the IDAS LPS-D1 and there is now a D2 which notches out more of the blue from LED lighting if that is getting problematic in your area
you can get these from Astro-Hutech who is the US dealer for Borg refractors
these designs are multi-layer thin film which only notch out wavelengths of man-made sources, the Astronomik CLS is similar and have heard good things, but not used it
even with these, your sky background will take on more of a blue hue, so you will be weighting color channels differently to achieve neutral
other filters like a UHC, are bandpass, instead of notch, and effectively block what is not in the bandpass, so for example a UHC will only pass Ha and Oiii,
for RGB color it would be near impossible to get a proper color balance, and then narrowband is just that, very narrow bandpass of specific emission lines,
but that is why all images from these are called False Color, no way to achieve a human RGB response
A couple comments about pixel scale. In general you can be either seeing limited (if you have good guiding and a good corrector/flattener) or you can be pixel sample limited, this is all in terms of resolution of detail, or the ability to separate stars, if you want to draw parallels to Dawes limit. The necessary oversampling to resolve detail is about 2.5x, some will say more, depends on the SNR. So in your use cases: for the 130mm if the seeing is better than 3.4arcsec, you are sample limited and losing potential resolution, for the 152mm that limit is 2.5arcsec, and for the C11 that limit is 1.6arcsec which would be considered very good seeing and this certainly is a good pairing of optics to camera. The 152mm and this camera are a fair pairing if you only ever have fair seeing. With the 130mm of course you get a wider field of view, which can produce very pleasing images, eg your HH and Flame nebula, but there is also resolution left behind except in rather poor seeing.