Testosterone suspension is very painful and hard to keep Testosterone levels stable. You will have spikes up and crashes on way down and side effects.
I like Testosterone enanthate. It hits hard and able to mange stable levels with Monday and thrusday injections.
If you want an injectable prework out, look at Pharmaqo injectable dbol from domestic-supply.
I am considering using it on heavy training days.
Start with 25mg and see how u feel