If it's your first cycle 250mg/week would be fine, but you would want at least 8-10 weeks, 10 optimal...
I would throw in another drug for the first 5 weeks, such as dbol... 20mg/day for weeks 1-5 and sust 250mg/day for weeks 1-10 would be a GREAT first cycle.. Nice gains. Arimidex would be your best bet as an anti-e, I would use that at .25mg every day throughout the cycle (.5mg every other day would also be good) and clomid post cycle
300mg/day 1
100mg/day, days 2-6
50mg/day, week 2
50mg/eod, week 3
YUM