Yes, you can convert it using stanard powder conversion kits.
I think you will need alot of 4AD to get the same effect as 1g of test per week, at least 1g - at a minimum. 4AD is anabolic in its unconverted form, but its conversion rates to test are pretty low, only around 15-16%. Personally, i would rather do a syno conversion over 4AD cyp as i tend to bloat more with 4AD.