wow fast responce,s

Im looking to get stronger but also bigger , im 5,10 about 12 stone reasonably built deffo not skinny , i used to be quite fit throughout my early twenties, cycled to work , manual labour all day then use a home gym most evenings but never knew anythin of muscles group,s rep,s ect
So for the most part i was wasting my time i suppose lol ,however i seem to have gotten the bug now and im enjoying it again

Currently im doing
Monday: back, biceps
Tuesday : cardio
Wednesday: chest, triceps
Thursday :cardio
Friday : shoulders :legs ( although i seem to have got myself a knee injury so legs are off limits for the time being)
Saturday: cardio
then on the last day the cycle starts again , looking online there are so many different routine,s and trying ti figure out which to try and follow is a minefield.
A common thing ive seen recommended is that you should do 3 excercises per muscle and between 3-5 sets of 5-8 reps ?
This doesnt sound enough to me ? Ive been doing say 7 excercises per muscle with 3 sets of ten , and seem to be gaining shape quite well however i obviously want to maximise my workout time ,,,
Oh im also using MP Hurricane xs and again it seems to be going well,
What would you guys recommend regarding how many different sets, excercises ect ect Also dont really wanna go down the roids route as ive read of nasty side effects and tbh i think its gonna be more rewarding to do it without .