Honestly, I only did one full mock (Medify Mock 2) and i think i got around 710 average, can't remember though, but it was definitely around that
that was a couple of days before my actual test, though.
My performance stats were around 80% i think? But that is without time constraints, and I'm not completely certain, it's been a while
I feel like the free Kaplan mock will be purposely really difficult though to lure you into thinking you need to pay for their service. Not sure though since i didn't do it.
It's good that you have those distractions though! You will work harder ion the time that you do have!
The Monday and Tuesday before my test, i spent the entirety of the day potwashing, which only left me with an hour or two in the night for practice, and it allowed me to properly focus on my practice, and the days went quickly so i wasnt worrying too much about it