With this work, we have analysed the effect of the excluded volume on the global density normalization in the sampling of RDFs from finite systems on the low-q behaviour of the structure factor and the coherent x-ray scattering signal. We have done so in order to design a robust set of best practices for the forward modelling of coherent x-ray scattering across the entire q-range, all the way to 0 Å-1 . We showed how the density normalization of the RDFs sampled from particles l in finite size systems does not take into account the excluded volume of the l-type particles themselves, and how this makes the RDFs converge to a value different from 1. This causes the integral in the central scattering equations to diverge if the RDFs are not corrected for this type of finite-size artifacts. We developed a conceptually simple way of correcting finite-size sampled RDFs, by accounting for this excluded volume in the density normalization of the RDF. Our correction was then evaluated alongside two previously published corrections which we repurposed for x-ray scattering. We have also shown the evaluation of S(0; R) and I(0; R) at increasing cutoff-values R of the central integral in the scattering equations as a robust way of assessing whether or not the low-q region of the resulting scattering signal has converged to its final value, as these quantities converge to a constant value with increasing R. We hope that this method will be used to include more of the low-q region in future work that focuses on the solvent-shell structure and changes therein.