Since the discovery of the large shape staggering in neutron-deficient mercury isotopes (Z=80) between neutron numbers N=101-105, this region has been extensively investigated in the recent years. Charge radii studies on lighter 177−180Hg isotopes down to N=97 revealed that Hg isotopes return to their spherical shape. A recent observation of substantial shape staggering has also emerged in the neutron-deficient bismuth isotopes (Z = 83), starting exactly at the neutron number (N = 105) as in mercury and exhibiting a similar magnitude. In contrast, the charge radii of the neutron-deficient lead isotopes (Z = 82) indicate they remain spherical until N = 101. A pronounced onset of strong deformation was also noted in measurements of neighbouring gold isotopes (Z = 79), with deformation starting earlier at neutron number (N = 107). This deformation persists down to N = 101, as shown by recent in-source resonance-ionization spectroscopy experiments, from which charge radii and magnetic moments could be extracted. Our objective is to study the quadrupole moments and spins of ground and isomeric states of gold isotopes (Z = 79) near the neutron mid-shell at N = 104 using the high-resolution Collinear Resonance Ionization Spectroscopy (CRIS) experiment at ISOLDE/CERN. These observables, along with more precise magnetic moments, will offer complementary insight into the "island of deformation" in lighter gold isotopes, providing new perspectives on shape coexistence in this region. This contribution will give an overview of the project and present some preliminary results.