Can anyone give me idea of what i should possible or could charge?
Simon:
At the risk of sounding snarky, I have made a few wild assumptions based on your previous posts. As a general rule, anyone who asks "how much should I charge" on the internet is probably not ready for a photo shoot of this caliber quite yet. It's one thing to make a few bucks by charging friends and relatives, it's how most of us get started in the photography business. This is something completely different, however.
This could be a great opportunity for you. With your wife being a cake designer and having an "in" with a local bridal shop, you are sitting pretty for some well-paying photography gigs down the road. Networking is what this business is all about, moreso than the photos themselves. After all, the best photos in the world don't mean squat unless there's someone willing to look at (and in this case, pay for) them. But let's be realistic about this:
If the bridal shop is hiring out models and lining up a location for this photo shoot, they are going to expect some top-notch results. After all, this is their business. Are you capable of delivering that? Do you have enough confidence in your skill with your new camera to pull this off, including the necessary lenses and lighting? Do you have insurance in case the unthinkable happens? What if you trip and fall, injuring one of the models and ruin a $5,000 wedding gown? Are you willing to put it all on the line? This includes not only staking your reputation, your possible future business prospects, including the relationship your wife has built with this bridal shop, all on this photo shoot? That's the reality of the wedding photography business.
I don't mean to discourage. If you have the gear, skill, and confidence to pull this off, then by all means go for it. But if you don't have all of the above, you would be doing yourself a disservice by charging for this photo session. If you're just starting out, it would be better to make that known up front so that expectations are kept in check and relationships aren't destroyed.