Hello and welcome to the forum
I use Hi-Temps QD for all my cars finished with OptiSeal, PoliSeal or OCW. It's just as good as any overly high priced QD but costs a lot less. Works great, smells great and leaves a nice slick finish. I'm not sure I would use an acrylic QD though on top of OptiSeal....I'm thinking that may cause some issues.....maybe.
As for the acrylic Danase product I'm not sure of, or any acrylic product, as I have never used one in conjunction with OptiSeal. I'm one for using OptiSeal all on its own and very rarely do I ever top it, or any other lsp I am applying. About all I do is maybe go over PoliSeal with OCW.
Happy to see you like the products and look forward to seeing some pictures of your car when done.
Take care,
Anthony