If you’re going single drive, then
is a good ESC choice. Will require making a loop key though How to make a XT90 Loop key
But it seems like you’re on a very tight budget, so I would highly suggest looking at the “used parts” or even “completes” category on this forum and picking up some gear used. Since you’re from the US, there’s nearly ALWAYS someone selling a used drivetrain, battery, board with enclosure, low power ESC, etc. on here. Buying 2nd-hand is how I manage to keep most of my builds from not exploding in cost.