If you aren't doing the work yourselves, and moving the gas line at this time is not a possibility, then I would advocate for changing out the cabinets around the range, as you are considering. Having different style cabinet doors would bother me much less than not having landing space beside the range. I DIY'd a kitchen from the 80's, in my older house, using some existing cabinets, some new, inexpensive cabinets, and some vintage cabinets from Craigslist. The differences in door styles do not bother me at all. If you like the idea of a two-tone kitchen, you could paint the new cabinets a different color, so that it doesn't look as if you were trying to match, but missed. Or use glass in the uppers, so that the doors look different at first glance. I wanted my kitchen to look as if some of the cabinets were original, and some had been added over the years, but I realize that's not a style everyone would embrace. When someone walks into the kitchen, I honestly don't think they notice the different door styles unless I point them out. So, if you can move the range over a few inches, you might try an 18" drawer base to the left, with 18" upper, and whatever drawer base will fit on the other side, with corresponding upper. If you can't match the counter top, use wood tops (I lived with a scrap of T111 beside my range for a couple of years before we actually started the kitchen remodel.) Check Craigslist and Re-Stores for used cabinets, especially if you plan to paint the cabinets. I converted an existing 18" tall pantry to an upper, by cutting it in two pieces, adding a new bottom, face piece, and trim, using wood scraps, so it cost nothing. I dismantled the remaining section, and used the sides for shelving in a closet. Do you have space in the laundry or garage to re-use the existing cabinets? Good luck, and when you get ready to remodel the kitchen, come back and let us help with the layout. :)

Are there colors that you really like? Browns, sage greens, taupes, etc. would all look good. I think I would stay with more muted tones though. If you're interested in seeing some virtual makeovers check out my website, Creative Visual Concepts.

how to decorate this area? which cartin to put?

It just needs some character. I would paint it a nice nautical blue, white trim and an inviting sunshine yellow front door. I'm curious about that item next to the sign in front. Is that a pipe that goes into the house? I'm a vacation rental property manager (16 yrs., including Brigantine, NJ) and I don't think your home has rental appeal right now. First, I hang clothes out to dry and have no dryer, but vacationers aren't used to that. Remove the drying contraption and install a good W/D set. The place is hemmed in by all the asphalt! I see some of it leads to another building. Is that a separate property or just storage associated with the house? Can any of the asphalt be removed or replaced/covered with pea gravel, crushed shells or other material that is more "beachy?" All of the patio/walk material around the house is far from adequate, interesting or inviting. Again, replace with more appealing and beach-appropriate materials. Change the storm doors for solid pane ones. On the side facing the ocean, find a way to open a door onto a new balcony/deck that will also provide cover for the lower area. Not knowing the interior layout, I'm guessing, but the three windows could be changed to a triple French door, slider or retracting/stacking glass panels (your budget may be a concern here.) In front where people park just put a pergola all across. I suggest you watch the Netflix series titled "Stay Here." It is chock full of ideas, DIY and marketing tips that will help you if this is your first rental venture. Pergola to emphasize your entry Deck idea for ocean side.