If you're not prone to MPB, then you have nothing to worry about.
Some bodybuilders can take 4 grams of test per week and maintain a thick, full head of hair. Others can take small doses and begin to look like Costanza. It all boils down to genetics as to whether you'll suffer hairloss or not, and if so, to what degree.
If you're that concerned about hairloss, get some nizoral shampoo and a good topical anti-androgen (spironolactone, fluridil, etc.) and have them on hand just in case. They can effectively combat steroid-induced hairloss (to a degree) while you're cycling.
There's always finasteride or dutasteride that you can try down the line. But you've stated that you believe hairloss doesn't run in your family, so you're probably/hopefully worrying about nothing.