That expedition fund raiser has been stuck at a reported $1300 out of $4M (0.0325%) for a couple of months now. The nice thing about trying to raise such a large amount is you can be sure you'll never reach it. You'll never have to actually try to prove anything, but you can claim you tried. The logistics for the proposed expedition are so difficult that, even if by some miracle you did get the money, it wouldn't be enough, so the expedition would have to be abandoned before any conclusions could be reached. But, still, you tried.
If you really had
any confidence that the earth was flat, you'd propose something that actually had a chance of happening and then do it. In another thread I suggested surveying the US state of Iowa
http://theflatearthsociety.org/forum/index.php?topic=61993.msg1629663#msg1629663 as a starter, but, realistically, a careful survey of any 100 X 100 mile (or so) area should do. The plains states might be a good place to consider for the logistical reasons given in that post, but other regions of the world may be satisfactory.
If you do this, remember that you're trying to convince a skeptical world that you're right and they're all wrong, so take meticulous notes, by hand, in ink, in a notebook with numbered pages (this is common lab procedure). Correct errors (everyone makes some) by striking out the incorrect info so it can still be read, and write the correction next to it. Each person on the crew needs his own book, and all measurements need to be noted by (at least) two different people. The original notebooks will need to be preserved and made available for inspection; expect intense scrutiny if you're using this as evidence that overturns almost all of the sciences.
If you manage to create a convincing case for the flat earth, contributions will flow in for your more ambitious project and you'll be sharing a Nobel Prize.
Heck, if the project seems well-enough thought out, I might loan you a 1930s-vintage Dietzgen surveyor's transit and/or donate some money if I or a designee were allowed to witness the survey.
We all know what would happen if you actually tried this, however: your loops won't close if you take accurate measurements but assume no curvature of earth's surface. You don't really have confidence in the flat earth idea but want to keep pretending you do, so there's no way a project that could definitively prove or disprove it will be undertaken.