You have a pretty good plan for a first cycle. Test + deca is pretty much the gold standard for increasing size and strength. It's a classic 'bulking cycle'. It's fantastic for putting on muscle. It's not a good option if you are looking to cut.
The main problem is that both deca and test are known to cause a lot of water retention if you aren't using the proper support supplements with your cycle.
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 biggest problem is your PCT. Nolvadex alone is not near sufficient for a PCT protocol. Run the perfect PCT protocol after your cycle and you have nothing to worry about. It will ensure you natural testosterone production recovers and you keep all the gains you made from your cycle.
Here is how I would run your cycle:
Weeks 1 - 12
testosterone e/cyp 500mg/week
deca 200mg/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/