Hi, I am ready to start your work right away ! With great communication skills I'll help you building your website with WordPress. I never used Customizr Theme before. I just downloaded and will be checking soon, but it doesn't matter for a developer to must have used a WordPress theme. However, if you're doubt, some of the WordPress themes I used are: Avada, Innovado, foodpress, iMagPress, sohohotel and zonda theme.
Apart of using this, I have developed a lot of WordPress themes and few plugins too. Having 3 years experience in WordPress and php I'm the guy you're looking for. PM me for more details. Have a good day !