You will love Mallorca! I was there in March and it was fantastic. In comparison to Scotland I found most of the climb gradients okay and you can settle into them rather than having to fight against them. I’m a little lighter than you with similar FTP.
I would have thought trying to get in a couple of back-to-back weekend rides would be good preparation? Taking the two middle days themselves at a sedate pace with stops for coffee and soaking up the amazing cycling atmosphere would be highly recommended too - on my last day in Mallorca I started to really feel it on the long Puig climb from Soller but found a 15minute coffee stop at the cafe at the Sa Calobra junction made a massive difference to get me home.
I remember this being discussed on a podcast too - be careful with the beer at nights! If you feel some anxiety about the days then a hangover will not help… Save yourself after the last ride! Have an amazing time.