Upvote:1
Both trips are best done as overnight trips, camping in the parks. So you need in addition to a guide, camping gear, food, water, etc.
Best bet is to search for trekking tours and guides in Kanchanaburi, as it is the closest city with tourist services. There are a number of companies there, but you will need to contact them about custom tours, as the destinations are not widely known, thus not widely sought after.