Although H-1B visa permits dual intent, I would not talk about GC process unless asked. I think, you may not be asked about it as you haven't complete 6 years on H-1B. However, somehwere in the visa application form (DS-156 or DS-157) you have to write 'yes' for the question: 'Have someone filed an immigrant petition for you?' This is as per your I-140 filing.
As along as the visa officer will think a well documented application is genuine (not fraud), I would think it stands a good chance for approval.