Do you think this would be a good buy? A friend in the area is letting me use her cable lock as well.
I use one of the longer OnGuard U-locks. Hasn't been a problem, yet!
OnGuard Bulldog LS U-Lock (Black, 4.53 x 11.50-Inch) https://www.amazon.com/dp/B008OHBE8S/ref=cm_sw_r_cp_api_7pNGyb77QJAA8
This has a 4 and a half in loop. I'm sure if you kept looking you'd find one