Hi Tina, thanks for posting, it is all looking great. Shame about the panelling, but sometimes these things happen for a reason. It is great the armoire matches the doors so well when they are all on one wall, but I don't think you need to have the bed and side tables matching, especially when they are on another wall. My issue with painting furniture, while I love it, is the maintenance. It does chip over time and becomes one more thing to paint. I don't know what the timber is in your furniture but another possible option, especially to give you the coastal vibe is to lime it. To do this successfully, you will need to sand all the existing stain off it and go back to the raw timber. The darker the original timber, the less limed look you will get so bear that in mind too. I did an old bunk bed up that had seen better days, for my grands bedroom. It was a dark red wood, but with 4 coats of stain I got the look I was after which was that driftwood/coastal look. The whole thing looks totally new again. Sorry I can't post a photo as this function no longer works for me. Have a look at the Feast Watson range of liming stains, they have some gorgeous soft colours as well, but they let the timber show through rather than having the solid painted look. It is a very easy product to use, it dries quickly - I did the 4 coats over 2 days effortlessly. The hard work is in the sanding.

you could look at staining this one>? Bamboo Woven Ply - Bamboo Australia | Sunshine Coast or may I suggest a good detail joiner could make it to your custom panel sizing and finish it suitably for the kitchen splashbacks (if that is what it is for>?) I can suggest someone who would be able to custom make this if you wish.

Do your research. Look at how they are joined in the corners and see if they will give you the look you are after.

There's quite a lot of choices beside plasterboard depending on what outcome you wanted, VJ, Concrete sheeting, Plywood, timber etc. A quick visit to Bunnings should give youa good idea.