i'm about to start my fourth cycle and i'm trying to decide the rest of the gear i need to purchase.

its gonna be a tren/tes stack with winny towards the end. i've always used cyp in the past and have couple of bottles of it currently. I also have a couple of bottles of prop. I need to buy a couple more bottles of one or the other to compensate for all the tren i'll be using. i was gonna start with the cyp and switch to the prop later in the cycle.

So my question is should i buy more prop and just make the switch earlier in the cycle...or buy more of the cyp and make the switch later in the cycle??