Yeah, IVs are a lottery. But if you can craft a full set of SB gear (or get someone to craft it for you) and do a few SB sessions, you should come out ahead, and can use the profits to buy IVs if you don't get any, or to invest in even more SB gear, until you're Scrooge McDuck with the gil. It's hit or miss if you buy all the finished gear off the MB, but even paying a commission fee to get it crafted can be cheaper than that. (Someone in my FC paid me 75k to HQ 10 full sets of leather after he supplied all the mats and shards. Plus a similar deal with someone else for the jewelry. He's still going to come out way ahead in the end.)
For BRD, Cobalt Sallet or Raptorskin Pot Helm (Cobalt Sallet is better, but everything else is LTW, so you might find it easier to stick with LTW for everything on the left side), Raptorskin Voyager's Belt, Jacket, Brais, Armguards, Leg Guards on the left side, then Spinel Choker, Bracelet, Earrings and Rings on the right. I use the SB+ potions, but don't bother with any of the gear. It's fast enough for me with just the potion, and I'd rather be able to convert every slot (except weapon).