Depending on how long you ran the NHA stack will depend on whether or not you get much out of the JW. ActivaTe has the same active as one the actives in JW and RR contains an AI...JW also contains an AI. If you ran the NHA for four weeks I would immediatly jump on the JW(but only for four weeks) since you already have the divanil from ActivaTe in your system and it takes a little bit of time to build up. If you already left some time after the NHA stack, it's like starting all over again...in that case I would wait four weeks or so, do yourself a favor and get a second bottle of JW and run those back to back if you want to do just JW, or throw in BAM if you please. If you ran the NHA for 8 weeks, I would wait as well since you just did an AI for 8 weeks straight and should take a break for a bit.
Just my opinion from my limited personal experience/knowledge.