you seem to be a good guy and have some common sense so i apologize for being rude at first.
i wouldnt be too worried about the sides of cabergoline, the igf lowering effects are pretty minor and the heart valve damaging stuff only comes into play at dosages of 5mg a week or so...
i would use 0.5mg twice a week for 2 weeks or so at first, you should be better by then. 0.25mg twice a week should be enough for maintenance for most guys.
you should run it as long as the cycle lasts imo.
keep your AI dialed in so that your estrogen is in range...
you can also run nolva. the theory that you shouldnt run a SERM with a 19nor is a myth, there are studies on that topic.
if you can get your hands on raloxifene thats a much better option as a SERM though, because nolva again has numerous sides while raloxifene is basically side effect free.
by the way, i dont know if the estrogen that comes from the dbol is shown on blood tests... dbol aromatizes to methyl estradiol, which is much more potent and long lasting than "normal" estrogen. you might still have extremely high estrogen, just not from the testosterone. but i dont know that, just speculating.
i can only speak for myself but 50mg dbol gives me itching nipples on the first day, while i can run 2g test without issues. just food for thought. personally i consider dbol shit.
personally, i would start running ralox (or nolva) + cabergoline + drop the dbol