Quite an old thread to nerco in, but hey-ho.
Personally, if you're dropping the cash on an SSD, you're doing it for the performance. Doing all the necessary tweaks is just getting your money's worth if you ask me...
Things like superfetch wear it out faster and just aren't necessary so that definitely should be off. If you have 8GB of ram or more, you don't really need a pagefile either. So I'd say any/all tweaks are worthit..!