Conducting an experiment on Brand support, give critque below

So seeing how strong Deathfire Touch is with Brand and how he's a pretty strong support because of the huge damage he can deal out, I was thinking of different ways to start him as support.

So the first thing I thought was to completely forego the support item and to grab amplifying tome or something else. But that didn't seem to be too effective.

However I realized that with corrupting potion and ignite, you can deal out tons of early game damage for potentially a first blood, then back to grab that supporting item you need. However I need the opinion of the players if this is a viable start or not. You get 3 charges of corrupting potion which gives mana and health, and a little bit more extra damage to your passive (albeit reduced due to it being DoT) but I'm curious to wonder if starting ignite/corrupting potion is a more viable start for Brand support.

While I am aware of the risks of such things. Like, if you don't get that first blood, or even worse, you die. You'll be scraping the plate for gold to try and keep up with the other support who's that much closer to finishing their support item. It's certainly a risky start, but I'm wondering if it's a risk worth taking. Because if you DO get that first blood, you can easily back, buy your support item and just continue right on track, moving onward with the rest of your laning phase, but now with a corrupting potion to help give that little extra damage.

Is this a viable start? Or is this just a gimmicky way to play and probably just something you'd do with a group of 4 friends in normals?

If I were smart enough, I could probably work out the math myself.... But I'm not! :D

Edit: What the question is basically is, what start deals the most possible early game damage for harrassing with your passive.

Amplifying Tome + Ignite Supporting Item + Ignite Corrupting Potion + Ignite.