I honestly think having a decent COMLEX score is fine, which you do- you also don't want to get yourself into a situation where you take USMLE and don't do great on it, which could dilute how good your COMLEX score is, if that makes sense. This year more than others I think programs are going to care less about USMLE- many applicants weren't able to take both with rescheduling and COVID madness.
If you decide to just take COMLEX, for Step 2 I'd try using a COMLEX specific resource- like TrueLearn/COMBANK- having a greater than 600 for Step 2 on COMLEX would, in my opinion, be just as good as having a solid USMLE score. The COMLEX specific resources were more helpful than the USMLE ones, in my opinion.