i've been doing CW's TBT and just started week 5 yesterday. wow 18 rep sets are fun..NOT! but to answer your question, i don't think iso movements like side lateral raises/urr's (or most iso work in general),
Especially done lighter and with super strict form is very demanding on the cns and therefore wont put you in any danger of over training if included in with the compound presses.
i may do the same thing as i've been feeling like my delts can use a little priority attention. i'll probably do those instead of the tricep iso stuff i've been doing.