3654 Autark 5.0

3658 Autark 10.0

66430 JumpStep

66429 JumpStep Pro

3655 Autark 7.0

3651 Vertical Knee

3630 INSPIRE M1

3635 BL1 Bodylift

3642 Squat Rack

3633 INSPIRE M5

3631 INSPIRE M2

3636 FT1

3639 FT2

3620 SF 3

How difficult is the assembly? Can you do it by yourself?