Budget build - cheap servos?

Hey, love the project, hope the community can help.

Don’t have the budget for a full DYNAMIXEL robot build yet, but that will not stop me from starting to build and experiment with VR controlled bot to prove the concept, so I am looking to use cheap 50kg-60kg servos like:
9imod - Waterproof Brushless Servo 50KG 45KG 35KG 25KG 180 Degree Aluminum Digital Servo Metal Gear for Traxxas scx10 RC Car Robot Boat|Parts & Accessories| - AliExpress
or
ReadyToSky - Waterproof 180/270/360 Degree 20KG 25KG 30kg 35kg 60kg Large Torque Digital Coreless Servo Aluminium Metal Gears 25T Arm RC Car|Parts & Accessories| - AliExpress
and was wondering has anyone tried that before?

Want to understand all the possible issues before ordering and starting to build, maybe there are other cheap servo alternatives that anyone has used?

Don’t know much about DYNAMIXEL difference from mentioned basic servos, what compatibility issues with the robot software and VR control software would there be?

Ready to tackle all the 3D and software updates.
Hope I will be able to share decent concept result.