Well, I thought about it for a while, and here's the points of consideration:
1. I spent just under 5 hours grinding a char out to level 15 on hardcore.
2. Once I hit 15 and received the payout for winning the competition, I no longer became restricted to gear which I find, and can play the char in whatever manner I choose.
2. I won 1510fg from the contest, 310 or so of which I immediately gave away, 1200 of which I kept.
3. At a 1200fg budget, as long as I'm patient, I can MQ on hardcore without too much issue.
4. It's not even required I MQ on hardcore. Should I be able to put together a decent enough set of gear, I can sit in the 70's and MF.
Taking all this into consideration, I've decided to continue levelling with 15First.
Currently up to level 20.