Have you noticed the section at the top right of the main page of the forum "Top Questions about Khao Lak"? It contains links to a great deal of general information about Khao Lak which may avoid you having to go through pages and pages of searches or wait for replies to questions you post.
Have a look through these first and if they don't answer your queries or they prompt new questions, by all means make a post and forum regulars will do their best to answer quickly and informatively.
Look in particular at the section "Where do I find previous useful posts that are now closed?" These are links to topics that have not been active for a while and can no longer be posted to but which still contain lots of useful information and links to photos and videos.
Happy planning for a great vacation!