Thank you both for your tips and ideas. They're really appreciated.
Any reasoned correction is welcome, since I may be ignoring most scientific studies and proven training ideas.
I may have omitted a bit of details, so I understand your wonder on many things. Some of these inconsistencies may just be my own fault, though.
I tried to split the muscular groups like this:
workout A -> legs + shoulders + chest(/triceps, which have already been used/warmed up by the shoulded exercises)
workout B -> back + lats + biceps (which have already been used/warmed up by the lats/back exercises)
In reply to Jungledoc:
I'm not doing squats with lower repetitions (and so using adequately heavier weights) because my rack does just keep the barbell in place but doesn't have safety bars. The first set is just a warmup and I push harder in the following two, so yes I'm not pushing all sets in the same way since the 2nd and 3rd use heavier weight than the 1st one. If I could sort out this rack problem I'd be hitting the squats deeper, harder and of course safer, I know.
About deadlift, I see progress being made by using this routine (hit 7 reps with 142.5kg last workout, at 76kg bodyweight) so I thought that while I try to stick to good form, I'd have been safer by not forcing just 3 repetitions with heavier weights and working in the 6-8 reps range.
I chose to separate upper body push/pull in an effort to not overtrain either biceps or triceps.
Since triceps assist the military press pushing overhead, I included them in the same workout via the chest dips, and likewise I chose since the biceps assist the lats muscles while doing bent-over rows and particularly chin-ups, I decided to include biceps curls in the same workout to finish them off and feel them being worked out.
I asked about dumbbell flys because sometimes I feel that the dips are working more the triceps than the pectoralis major. Or of course not like the barbell/dumbbell bench press I used to do at the gym years ago. But unfortunately I haven't got a bench.
In reply to ephs:
I've got no bench, so unfortunately I can't do the bench press.
A concern of mine about overtraining: won't using the triceps in both workouts (dips and military press) or quadriceps/legs on both workouts (squat) led to overtraining or not enough rest, since they work double the time than biceps do?
I think I've never trained two heavy compound exercises like squat and deadlift on the same day, though if this is better for some reason I've always ignored, I'll have to switch at it
To add some context about my otherwise virtual bodyframe, so that you aren't holding back suggestions due to lack of data:
I think I'd fit in the mesomorph somatotype (though I'm no pure mesomorph and before weight training leaned to the ectomorph or underweight mesomorph), I'm 5'6" (about 1.68m) tall and my past personal bests have been (at 78kg bodyweight):
bench press 9 reps using 90kg
deadlift 6 reps using 160kg
chin up 1 rep using 40kg
weighted dips 2 reps using 60kg
never really squatted the proper bottom way (again for safety reasons, even the gym didn't have safety bars), so I'd have preferred to omit recalling the half-squat using 170kg for reps
as of now I am way behind above stats, I weight 76kg but I don't know how much I'd bench press, I did 4 weighted dips using 40kg, did 4 weighted chin ups with 20kg, deadlifted 142.5kg for 7 reps, and am squatting in the 10 reps range using 100kg, but again I'm not being perfectionist about this last one since I'm trying to be safe even if no safety bars are available.
Thanks for reading and helping me out