I suggest you ring the Feast Watson support line and ask them and let them know what type of wood it is, eg solid or veneer and what type. I had such a difficult time deciding what to use on my wood benchtops in the kitchen, the product I used is perfect. I consider aftercare a big factor and the product support person helped me decide because of the ease of maintenance re accidental scratches etc.

I was told to bend arms at the elbow then have forearms parallel to the floor with hands outstretched - that is a comfortable/ergonomic bench height for me. My sister did this and no sore back working in her kitchen:) The sink - arms stretched down and hands flat on base of sink = comfort. Chairs are made to suit the male proportions -higher- so generally to get comfortable women (as usually women are shorter from ankle to knee) - have to cross their legs so the hips can relax. (I have seriously thought of cutting just 2cm from our chair legs )

I think a small round table is a good use of the space. I have a feeling the kitchen/meals could start to feel cramped very quickly. A table with 120cm diameter will seat 4 and 5 at a squeeze. Example table Regarding bar stools, I think you need to find something that slides under the bench to keep the space as open as possible. Finding a seat at 70cm might be a tough thing. Good luck

If the island is Screw s from the inside of the cabinet. Angle brackets or L-shape channel under the timber. There are many different ways of doing it. depending on how elegant you want it to look and what material it's connected to.