Re: First cycle
At 250mg per week you probably won't need anything, though it's always handy to have Nolva at hand in case you're prone to gyno and Adex if your prone to high estrogen conversion. An AI is usually used at very large T doses and even then only if you're suffering from symptoms of high E2. AI's can kill your gains if you crash your estrogen. I'd run the cycle for 12 weeks.
PCT-wise I'd run:
W1 - 40mg Nolva / 25mg Clomid
W2 - 40mg Nolva / 25mg Clomid
W3 - 20mg Nolva / 12.5mg Clomid
W4 - 20mg Nolva / 12.5mg Clomid
Ideally you should get bloodwork done pre cycle and post PCT for comparison.