help me find a good split

[AnimalMother]

ive always used a 5 day split but im in my 3rd week of my first cycle and i know a 4 day split would be better at building mass which is what im trying to do. this has been my recent split.
mon-chest
tues-legs
wed-back/traps
thur-shoulders
fri-off
sat-bi/tri
sun-off

i know im probably overtraining on this split so i have thought of a few 4 day splits.
mon-chest
tues-off
wed-back/bi
thur-off
fri-shoulders/tri
sat-legs
sun-off


mon-chest/tri
tues-off
wed-back/bi
thur-legs
fri-shoulders/traps
sat-off
sun-off
please lemme know what you all think. im 215 lbs, 6', 14%bf. my cycle is sust. 500mg/wk and deca 400mg/wk for 10wks.
thanks.