I think a comfortable distance between the island and the counter is around 42". It seems that you have only 30" between your cook top and the counter. I might be a little too tight. The wall between the entrance and the kitchen could be 4' long instead of 6', you would then be able to move the island a foot which would give you more room between the cook top and the island. Could you switch the location of the toilet and vanity in your dad's bathroom so your enter facing a vanity instead of a toilet which is a lot nicer.

Do you want the same design both sides? It all depends on the way the door will open as usually a door requires either a flat border or an L shape to close? Do you want the hinges visible or invisible. etc etcThese details are important. I would talk to a carpenter or woodsman first.https://www.houzz.com/magazine/know-your-house-interior-door-parts-and-styles-stsetivw-vs~13812351

that is what i have added if you can see the pic above.. want some suggestions on partition that i can use between dining and sitting

Dear Mr. Maverick, Hope you are doing great. Seeing at your post its very clear that you are a passionate person and taking your designing process seriously. Also you are accepting that you are not a designer yourself which is a good gesture against those clients who think themselves superior when it comes to design choices but knows nothing in real. I agree with above replies to share some information about your house starting with the floor plans as without these no one would be able to help you in any way. Also you need to understand that designing is a subjective and time consuming process and doesn't happen in an instant. If its just about getting ideas then you can find millions on google search. But being on Houzz platform is a great thing as its full of many talented professionals contributing to the solutions best way possible. I hereby offer my services and request you to go thru my profile and works and see if it interests you. I can show more interesting works if you insist. Let me know for further more as i am offering my services remotely as well including couple projects in Ireland. Best Regards, - Ar. Ravi Prakash Email- ar.ravi2013@gmail.com