Skye Trail in May: Seeking Waterproof/Clothing Advice

Hello UK wild campers! I am headed to Scotland the second week in May to hike the Skye trail. I normally hike and camp in the Southeast US which is quite different from Scotland weather wise. I know to prepare for lots of rain and wind, but I’m not sure exactly what gear to pack, especially considering the length of the trip (8 days with a rest day at a b&b in Portree).

So far, outside of rain gear, I plan to pack/wear:

• hiking pants (possibly 2, if I don’t get rain pants)
• hiking shorts
• merino t shirt (possibly 2)
• hooded sun shirt
• light puffy jacket
• alpha 90 hoodie
• merino wool base layer for sleeping in and/or extra warmth if it’s chillier than expected
• 3 pairs of merino wool socks and underwear
• light gloves and beanie/winter hat

I would love to get some advice and opinions on:

• poncho vs rain shell: I typically use a poncho which doubles as a pack cover, but also have a sturdier/heavier rain jacket if poncho + wind + cool weather is a bad idea
• whether it’s worth it to invest in some rain pants or not
• if you think I’m packing too much or too little