Hi. Unreal Engine (to me) is the ultimate highest architectural visualization tool (and it's free!). And unfortunately, it has very high system requirements.
The question is, how different is your tool/plugin/workflow different from what YouTube already has: SketchUp to Unreal Engine Tutorial #1.
This is a 5-part tutorial guide, which is apparently the only one on YouTube at the moment that has quality material and information.
If your product is good enough to outrun this quite tiresome (but functional) tutorial by offering a single-or-so-click way of having a model created in SketchUp show up perfectly and correctly in Unreal, then I think you'd succeed.
Apparently your website has technical issues as I was unable to explore it and see what you have at hand.