That blend looks really good actually. I like your idea of injecting 0.5ml twice per week with 1ml of sustanon 250 twice per week. That will give you a weekly dosage of 300mg/week deca + 500mg/week testosterone which to me is pretty much perfect.
Remember to include the proper support supplements with your cycle:
1. An AI to keep estrogen in the low-normal range. Aromasin at 10mg EOD is a good dosage.
2. An anti-prolactin drug to keep prolactin in the low-normal range. Cabergoline at 0.25mg EOD is a good dosage.
The support supplements are very important because high estrogen and prolactin levels can lead to side effects like gyno and water retention.
Here's what I recommend:
Weeks 1 - 16
testosterone sust 500mg/week (1mL twice per week)
nandrlone blend 300mg/week (0.5mL twice per week)
aromasin 12.5mg every other day
cabergoline 0.25mg every other day
After your cycle run the perfect PCT protocol:
http://www.evolutionary.org/the-perfect-post-cycle-therapy-pct/