What you already have is what so many people are seeking, that light-colored look. Your backsplash looks very functional. What did you have in mind?

Floor?

So you want an update and something other than formica. Budget ? quartz , but consider the age of your cabinets and is it worth it . Granite will be cheaper but the very light look which is quite nice w the oak won’t be as easy w granite. Just go look w your sq footage in mind . if you’ve had the Formica for a long while I think it’s understandable to seek a change.

Here is my wood kitchens idea book with both new and older, refreshed wood kitchens:

https://www.houzz.com/ideabooks/75202366/list/wood-kitchens

You will need to think about whether or not you can add to the bottom of the backsplash to meet the new counter. The backsplash is unique and interesting - but do be wary of mixing too much warm wood with cool grays - they do not bring out the best in each other. Your present countertops are just fine:)

It looks like your microwave may be sitting on a wood shelf? If so, change that as it is a fire hazard.

Try New and Traditional Countertop Choices. Then if you still have questions, come back and ask them.