You should be able to get by with just the nolva. Also depends on if the Doc. got rid of all the gyno first time around. I just keep alot of Nolva on hand and if things start to puff up pop the dex and you will be good to go.
By the way why are you running your test like that. It would be better to run Mon/Thur injections for 10 weeks you will see better gains off that. Up to you though.