Opinions needed

I currently have a Mapex Mars kit with birch shells and it’s been great for taking on the road and not being too worried about damaging it. The problem now is I’m in a new bad and need to have 2 rack toms again and my current kit has 1 rack and 2 floors. I’ve been looking at a Mapex Mydentity kit that is a six piece with a sweet color combo I like. Also has maple shells. I am wondering if going from a 22x18 bass to a 20x18 would be a problem? I play metal and hardcore stuff. Finding a 10” rack tom to match my current kit has been hard since it’s discontinued. Thoughts on these kits? Or the bass drum size?