I have a jackson warrior JS30, its got EMG's (81/85 + 18V mod) and sperzel locking tuners

how good are the tonal properties of the indian ceder wood? i havent tried out enough guitars to tell the difference, i hear the wood doesnt really have a significant effect with EMG's but i'm not certain

is there anything i can do to improve higher fret access? its a bolt on neck so could i possibly cut bits off or make it a set neck kinda thing?

finally, can i fit a double locking trem to it? if so how hard would it be and how much would the parts cost?