I am considering making a multi-step cache. It will have 3 steps before you can find the cache (so 4 steps total). The coordinates for the cache itself will not be posted, to find them you must visit 2 of my other caches, finding a mathmatical formula to find the lat in one and a formula to find the long in the other. The 3rd step will be small cache containing only a code (this will not be its own cache but part of the new cache). The final cache, found by using the coords from the first to steps, will be locked shut, the code from the 3rd step is the combination for the lock. I have not yet placed the cache but it is in the planning stages. What type of cache should I list it as?? From what I see it can be a multi or a puzzle cache (due to the formulas). Also what size should I list it as, the cache itself is a large container, step 1 and 2 are regular size and step 3 is a micro?