Sir, I have gone through your requirements as well as your site. Your site is no doubt good, but, from SEO point if view, I have found some issues. Like:
XML Sitemap - Missing. I'll set it up if you want.
Meta Data Optimization - Meta Tag is really poor. I'll give you SEO friendly Meta Tag after doing keyword research.
Google Analytics - Not set up. I'll set it up and manage if you want.
etc.
Sir, I have almost 5 years experience in not only SEO field, rather in total Digital Marketing field.
Moreover Sir, I am very updated in SEO, even in recently updated Pigeon, Penguin 3, Panda 4.1 and Hummingbird algorithm, keeping deep knowledge of which is very essential nowadays to bring suitable ranking in SEARCH ENGINE RESULT PAGE. Even I am aware of SEO 2015.
Sir, I always maintain WHITE HAT process. So, I must assure you with overwhelmed confidence that your site will never be penalized in future, even ranking will be stable for a long days after having stopped work.
Really looking forward to hear from you.
Warm Regards.