it depends on your goal , that stack with decient food may add a good bit of muscle which could put you in a differant weight class so you may want to diet at the same time to maintain weight but drop fat and add muscle then the last 5 days add in some halo at 20mg a day.
15 weeks is a good while to be on a cycle of tren but if you ramped up the dose say start at 300mg/wk of each then 5 week in add 100mg each , then the last 5 weeks ad another 100mg and the last week throw in the Halo i can see you adding a bunch of power
be carefull of injurys though , two guys i know tore muscles power lifting on high dose tren