Hello,
I'm Opencart Developer from Slovakia. I'm the right choice for your project.
We have the same timezone, is better for both. Because if i need something from you, i will write or call to you, and you are not sleeping :D
Now seriously.
I have big experiencies in OC, i have write some modules and modifications for this system like reservation system for Travel agency, Trader manager system for Tools seller company etc.
Give me this project and I'll show you choose the correct one !
Regards,
Lukas