I have an old Art Deco house with original silver door handles that I couldn't ever part with but I love brass gold so have added accents with inexpensive decor items - based, lamp base from IKEA, Kmart gold wire fruit bowl and planter pot and a few vases and other bits from H&m. (They have lots of nice gold things) it works really well and makes it more interesting and it ties in as it's still geometric and traditional looking even though the colour is different.

Yes, changing the handles, if different sizes, will leave screw holes in cabinets. These have to be carefully filled and painted to match cabinet. If the handles you really want are bigger, then the original screw holes may be covered by new handle. If you really want the special handles, but spending priorities are needed, then I would source the cheapest possible handle, which is the same size as the handles that you really want. Big picture, is you may ruin your cabinets, which are a lot more expensive than handles.

Renata, you’re making great progress. Apart from wear in the spot where you’ll be doing the “push”, the push to open functionality comes from the hardware. I’m planning shaker style doors (materials to be decided) with push to open for overheads and drawers (mainly) below with pull handles. You need to check with your kitchen people if they can provide the push to open hardware, and their opinions on the wearability of the finish in the “push” spot. If you opt for “shark tooth” pull grooves to avoid handles you will have less choice of materials - but they’re not really a Hamptons look but can be coastal.

Neither of the two tiles you’ve selected look that cohesive with your other choices. It may be the screen but the colour and texture looks off. I’m always surprised that people don’t pick all their selections at the start of the project. Do an image search of green kitchens here on Houzz and on Pinterest and you’ll see a lot of options to inspire you.