Ummmmmmmm I could be wrong but.....
So long as you take your temp at the same time each day, anytime should be ok, but I personally would go for the "wakey up, rise and shine" one so for you that would be your 7am temp.

My temps are totally different @ the two times though. @ 4am its low meaning I haven't ovulated and @ 7 its high like I have ovulated??? Thats why I am so confused..Thanks for the reply, any info does help!

Your temp will fluctuate during the course of 24 hours, which is why I believe you should take your temp at the same time every day.
Also you would get a difference depending on how cosy you get in bed.
Or to add another scenario perhaps you should wait for a little while after you get up.

I figure so long as you base your temp on ones taken at the saem time you will then be able to track it a bit easier.

See your lunchtime temp is probably totally different to your suppertime temp.

I've been taking my temp for a few months now, and sometimes I get up to go to the bathroom at night too, but I always take my final wake up temp, at 6:30am.

Since you're getting up at 4 and then at 7 you should really be okay, it's recommended you take your temp after at least 3 consecutive hours of sleep, so you'll be fine.

Also, your temp is likely to be lower at 4 am, just cause it's in the middle of the night when your temp is lowest, it will naturally rise as the morning progresses, which is why even on the weekends it is best to take your temp at the same time, in your case 7am, not when you wake, even another hour sleep can raise your temp enough to give you a wonky chart.

And don't know if you're already doing it but if you chart cervical mucus too then you'll be that much more sure that you've ovulated, you won't just be basing it on your temps.
good luck!