Will the "Responsive" Theme Do What I Need It To Do?

Hi guys,

My name’s Bryan and me and my partner are trying to set up a professional photography website. Someone has recommended the “Responsive” Theme with the addition of some plug-ins. I can’t see much from the demo (perhaps my iPad only enables limited functionality), so I’m asking here.

Will the “Responsive” theme what I need it to do? Here are our key concerns.

1. It must be properly usable for a Photography business.

2. I do not know coding but will need to update the website often myself.

3. We want it to look like this website: http://www.chikophotography.com. BUT with the following additions:

3.1 dark / black skinned.
3.2 private galleries with passwords where customers can look at and select and order photos from their shoot.
3.3 shop function where we can sell prints to the public.
3.4 properly usable on different browsers
3.5 properly usable on PCs, Macs, tablets, phones, and so on.

4. Which plug-ins would I need to install? For example, would the 2×2 (or 3×2, whatever) changing images be built-in? Or would I, as I imagine, need to get a plug-in? Which plug-ins would have the same effect as on the http://www.chikophotography homepage?

I hope you can can help me. We have a clear idea in mind of what we want. And the idea isn’t too technically trying. But I am apparently unable to find the right theme or combo of theme and plug-in(s) to meet our needs (not helped because I don’t know coding etc). In short: I am going mad with frustration. (genuinely: after scores of hours of work on this over weeks with everything else being put on hold, I am finding the pressure, stress, and frustration a little bit too much now). I would be so thankful for any help you could give me.

Kind regards,

Bryan