In my estimation no, it wasn't worth it for me, although maybe when I see your print I'll think otherwise! Anyway, maybe once I get over my move and unpack my roomful of boxes of photo stuff I'll get back to the project of adapting an inkjet to apply Pt/Pd solutions. Then multilayering might be reasonably economical.
I've read about applying gum over platinum for better depth, have you tried that yet? I applied sandarac varnish and that helped a fair amount.