How to make rooted android phone faster and avoid battery drain

I have rooted by Samsung S dous s7562 (645 RAM single core 1ghz processor)phone using Kingo Android root desktop App. I decided to root my phone as it was very slow . I have already done the following to speed up the phone : - Uninstalled unnecessary system apps. - Frozen bloatware - Using RAMBooster App - Tried overclocking a bit using CPU Adjuster app **Problem :** > I don't have any idea regarding how much should I overclock based on > my device specification. > > I changed min CPU speed from 245Mhz to 320Mhz . > > But since I have overclocked it the battery is drain too fast although > the performance is a little better(but still lagging a bit). **Please suggest what should I do to speed up my phone without damaging it and without battery drain(battery is weak already as its an 1.25 year old phone)** Also please let me know How can I move apps to sdcard as even movetosd apps for rooted android devices are not working , (as my internal memory is read as sdcard) Thanks!