I was thinking of having an indoor/outdoor cat room like this. Also could be me and Michael's meditation room. That way Samson could have his litter box, food bowl/water bowl in here where the dogs couldn't bother him. We would need to make a cat flap big enough for him and small enough for the dogs.
DIY CATIO PLANS - this lady is a genius + even has DIY plans! Even if your neighborhood allows cats outdoors (many do not) we were turned down several shelters b/c we allow our cat outdoors even tho we watched him in the yard they said that's a no no nowadays b/c outdoor cats live less longs than indoor cats. I think cats clearly want to be outside so maybe if they live longer indoors but miserably that's bad. Great compromise b/c no fights + stops killing wildlife