If you are just using injections for 10-12 weeks, and you want to bridge with halo or anavar or winstrol, it wouldn't be much different than using these drugs as part of your normal cycle. You simply time your use differently. Of course, if you were using Anadrol as part of your normal cycle you wouldn't want to do this.
It is a good precontest drug, and that is what some consider their bridge or time-off period. I have had good results doing this.
As long as you have regular LFT's you can guage hepatoxicity.