You could use it as a kickstart too, it's about personal preference... If you decide to use it in the tail end of the cycle, I'd recommend to continue taking Epi for 2 weeks after last injection of test C so you'd have a decent amount of androgens in your system while the test clears out.
My first injectable cycle was test at 500mg/week with 6 week kickstart of Epi at 40mg/day. It was great.
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