Look man everyones different, the majority of guys i know recommend 400mg to 500mg Test e or Test c or Sus250 pw for a first cycle. Then every now and then i'll hear some dude say 300mg pw is enough, but as far as i'm concerned it just isn't enough. What will happen is your natural testosterone production will completely shut-down and then your left with that small 300mg pw dose that your hoping will not only supply you with external testosterone, but will also give you steroid like gains.
Another option is to run say a small dose of test pw and have an oral alongside it, though you with your sensitive tits may want to give this one a miss.
Look on the bright side man, if you do grow massive breasts, you can then go Bra shopping and hang out in Underwear shops with chicks.