You actually have a decent amount of light accessing your lowers. Personally I would take the lowest row or nodes off from this plant and leave the rest. I wouldn't remove anymore fan leaves until 1-2 weeks before harvest. A tip, next round of you pull the branches outward using clips or ties to your pot, you could leave all the lowers and they would become useful. Timed right each new growth would pull up and expose the bud it develops. I do my last training right at flip of 12/12 so my last training is what I get minus some stretch. Nice plant ! Keep it up