Still no one answered my question lol. Is it safe to clean the lens and LCD screen with alcohol wipe ?
alcohol should be used sparingly. On glass it should be fine, although I am not sure how the coatings react over long term use. On plastic, alcohol can leach things or alter the plastic, depending on the plastic. Perspex becomes turbid after long term use. Given that one does not know how the plastic of the lens or the body reacts, it's probably better to avoid it. Also, the LCD screen, I am not sure if that is actually glass or plastic.
I have a screen protector on my LCD, so just wipe it with a cloth (and some breath) if necessary.
For the lens elements, first rocket blower to remove dust as much as possible. You don't want to wipe the lens when scratchy dust particles are on it. A brush can help release particles. Only then I use microfiber cloth or clean cotton cloth to wipe, again with some breath if necessary. If there are some persistent grease spots, only then some lens cleaning fluid.