Please take this without gurantees and ask your hair specialist.
It depends on which material is used.
You might think about good quality hair.
The braids should be able to be undone later.
I remember something like 3 months until it grows out.
Clip in might also work. Advantage is you can take them out at night and they might not need to be washed as often.
Do you have a hair color that is easily available, and the extensions blend in easily ? Otherwise a dye might be necessary (I'd prefer soft and natural products).
For all of this you could have a look at youtube, there are some vids explaining the processes. Sewing and clipin seem to be one of the more advantageous methods. But you might also consider wigs, there are some who allow for ventilation underneath.
Concerning your own hair you could have a look here:
https://www.susans.org/forums/index.php/topic,167887.msg1661891.html#msg1661891hugs