To give you an alternative, you can also go ahead to sell your guild to another member, e.g. for a price of "just the fees".
Purchasing a new guild costs 2,500fg and an ownership transfer costs just 1,000fg (1,500fg if the new owner decides to get a name change, too) as taken from
here.
If you can find a buyer for just the fees which is usually done for guilds that don't have a lot (or any) additional features bought, then you can save yourself the 1,000fg fee of deleting it and "get out for free". And it's a benefit for them as well because they have less investment for the same result.
Guilds are commonly sold either in the General Chat or the Donor Forum. I'm happy to support you with that once you have found a buyer. Simply PM me with the details and a link to your sale topic (if available) and we can get it going.