Tamox is fine with tren. While it will initially result in a very slight upregulation of progesterone receptors after about 2 weeks the progesterone receptor actually downregulates. So tamox and tren are just fine and dandy together. That being said Id still recommend using an ai to manage your e2 and prami to take care of the prolactin issue.
Also many are joking about stopping milking yourself but the fact is you need to stop touching your nipples. Stimulation encourages more lactation so leave them alone!