OP, other than using a Minnie Van to/from MK, I would just go with the regular Lyft vehicles unless you need the car seats. I probably spent about $100 using Lyft for my weeklong 2017 trip, and that included transportation from POP to MCO. It was worth it since the cheapest rental that week would have been at least $150 and a vehicle I would not have wanted to drive.
On an short trip in 2017, I did use the Minnie Van to MK, before the rate increase, and it was great to be let off at the bus stop. I would still consider springing for that if needed. I only did so because it was Easter Sunday and the line for the bus would already have put us at waiting for 1-2 that morning.