Searching For The Right Theme

I’m in search of a theme that has most things built in. Here’s the reason why. I need a “single point” sign in, that allows the client to then see their history in: Estimates, Invoice, Service Tickets, etc.

With Plugins I can’t seem to get this feature to be single point sign in. They have to sign in for tickets, then sign in to shopping cart separately. Very frustrating.

I’m a copier dealer, who also specializes in other technology sales and services. Any help in finding a great matching theme is appreciated. I was using Brandon, which worked ok because I was using an outside service. Now I want to have everything under my website.

Thanks in Advance for any help you provide.