I love Deca and Sus and Dbol... I'd up the sustanon dose, esp at the very start.
At the least, I'd take 2 x 500mg shots of sus the first week. That is NOT a big dose of testo!
Its only 360mg of active testo weekly for about 3 weeks, too low actualy.(If its real Sus)
I like some test in any part of a stack. Tprop and stanoz, var, primo are teh path to low water retention.
Your contest prep is a very individual thing that Im not experienced in.
eg: Some like Drol and Suspension right up to show....
I would up the Sus dose considerably at start, and just schedule a decreasing dose of it to 21 days prior to switch over to the less water retaining stuff....
Thats the major detail. Rest get played by feel.