If it works for your schedule, I don't see why not. I can't do CGBP after chest either. So I'll usually drop that when pairing the two together and bring it back when doing tris with another bodypart. But I've got a commute and kids and I can't lift multiple times a day.
As in your chest fatigues before your tris get decent stimulation? I don't see anything wrong with just "feeling" it in another muscle group as long as your frying the tris in the process. You ever tried doing a press for your tris AFTER some isolation work? Like pushdown lying extension close grip bench
in that order?
You could also think about doing some weighted DC style stretches for your pecs before your tri work...might take them out of the picture a little bit more.
Or by all means, if you wanna go to the gym 2x go for it!!
Ya schedule will be the biggest obstacle, but if you have time for it then go for it. I absolutely love training this way. It allows you to go at your isolation movements with more intensity than you would be able to if you dod them immediatly afyer compoumd work. I think it was CT that said splitting your workout onto two sessions is more productive than one long session.
10 and 5 would probably be ideal but I think I have seen CT say that when you're doing two a days they need to be 4 hours apart. Either will probably be fine just make sure you're getting a good meal in between.
I dont think its impossible for full time jobs at all. It's really easy to hammer isolation workouts for 30 minutes and get good volume in, you dont need 90 minutes of isolation exercises. Just rest shorter periods anyway. as long as you can get 20-30 minutes after work you can hit whatever weak muscle groups you want. Days that aren't as busy, take 45 minutes and rest longer between sets in your second workout. Kids would complicate things more than a full time job imo.
I do like the low rep first/high rep later set-up very very much.