Forming a "habitual" sentence: "I usually get up at 7.15" > **** Would this be a correct way to say 'I **usually** get up at 7.15'? Not sure is correctly placed before the time+

Yes, you can place frequency words like , , , etc. before "time+".

>
> []{}
> []{}
> etc.

For more examples, see Webliousually