While I am in great sympathy with your goal to drop and level and Arc as early as possible- it certainly makes the game, if not easier, then less hard- I think you're setting your sights too high too quickly.
If you're producing only around 30fp a day, even if you do build up enough FP to make the sorts of FP-for-Goods trade others have mentioned, progress on levelling it will be painfully, frustratingly, maddeningly s-l-o-w. At some point, players will begin to donate large amounts of FP to your Arc because players with high level Arcs can actually make a profit from their donations, but that "sweet spot" is in the mid-30s, and even that level Arc takes tens of thousands of FP to reach.
My first suggestion would be to increase the number of FP you earn each day. Almost every Event building awards FP these days. I think the chance to win a building which produces FP (think Shrines of Knowledge and Wishing Wells) is present in every Event, usually as a Daily Reward or in some other fashion. Nothing wrong with continuing to try for the remaining BPs you need while you build your FP production.
By way of comparison, I think I dropped an Arc on the world on which I am in the earliest Age in.....Colonial Era. I was producing roughly 110 FP a day then. And it's still a slow process.
I agree that a Guild generally and advanced players specifically "owe" you nothing. That said, every single Guild of which I am a member has an unofficial policy of generosity towards less advanced players. With the exception of the newest GBs, you'll probably find multiple players who are willing to trade Goods for FPs at a lower going rate than the general player base if it's for a very important GB like an Arc. I've had Guildmates trade Goods for an Alcatraz or a Chateau Frontie-thingy for Goods of my Age and whatever FP I care to donate to them. All that's ever been asked of me is to return the generosity once I'm in a position to do so, which I am glad to do because it helps all the Guild.