cat hand glove, vit glove, silversmith bracelet, bradium ring, vesper core 02 are fine;
really anything that adds stuff like STR, VIT, %damage, ATK, etc, should be good;
if you know which stats/substats are needed for shura, you should be able to search online databases (iRO) for appropriate gear;
though speaking about improving gear, i usually stick with cheap gear and save up for stuff that i know i will use in the long run, (ie. not bothering to buy intermediate level stuff);
not sure what gears you have on alts but if you have RWC pendant(s)/ring(s) from your alts in same account, those are fine in PvM too, though depends how good the enchants are