I am in the process of building a LSP. I am using a Mamba max controller and an 8XL motor. The 8XL on 4S will be fast enough to race, but will not be uncontrollable on a 10 lb. truck. I think anything higher turn would be too slow for you on 4S, and that's all I would put on a MM if you are going to be doing 30 min. mains. Do a search for LSP on this forum, and it will give you a few good ideas of what people are using in their setups. Are you still planning on using the 10000 maxamps? Weight and ability to fit on the relatively narrow chassis would be a concern for me.